North Korea to target U.S. with nuclear, rocket tests

SEOUL (Reuters) - North Korea said on Thursday it would carry out further rocket launches and a nuclear test that would target the United States, dramatically stepping up its threats against a country it called its "sworn enemy".

The announcement by the country's top military body came a day after the U.N. Security Council agreed to a U.S.-backed resolution to censure and sanction North Korea for a rocket launch in December that breached U.N. rules.

"We are not disguising the fact that the various satellites and long-range rockets that we will fire and the high-level nuclear test we will carry out are targeted at the United States," North Korea's National Defence Commission said, according to state news agency KCNA.

North Korea is believed by South Korea and other observers to be "technically ready" for a third nuclear test, and the decision to go ahead rests with leader Kim Jong-un who pressed ahead with the December rocket launch in defiance of the U.N. sanctions.

China, the one major diplomatic ally of the isolated and impoverished North, agreed to the U.S.-backed resolution and it also supported resolutions in 2006 and 2009 after Pyongyang's two earlier nuclear tests.

Thursday's statement by North Korea represents a huge challenge to Beijing as it undergoes a leadership transition with Xi Jinping due to take office in March.

China's Foreign Ministry called for calm and restraint and a return to six-party talks, but effectively singled out North Korea, urging the "relevant party" not to take any steps that would raise tensions.

"We hope the relevant party can remain calm and act and speak in a cautious and prudent way and not take any steps which may further worsen the situation," ministry spokesman Hong Lei told reporters at a regular press briefing.

North Korea has rejected proposals to restart the talks aimed at reining in its nuclear capacity. The United States, China, Russia, Japan and the two Koreas are the six parties involved.

"After all these years and numerous rounds of six-party talks we can see that China's influence over North Korea is actually very limited. All China can do is try to persuade them not to carry out their threats," said Cai Jian, an expert on Korea at Fudan University in Shanghai.

Analysts said the North could test as early as February as South Korea prepares to install a new, untested president or that it could choose to stage a nuclear explosion to coincide with former ruler Kim Jong-il's Feb 16 birthday.

"North Korea will have felt betrayed by China for agreeing to the latest U.N. resolution and they might be targeting (China) as well (with this statement)," said Lee Seung-yeol, senior research fellow at Ewha Institute of Unification Studies in Seoul.

U.S. URGES NO TEST

Washington urged North Korea not to proceed with a third test just as the North's statement was published on Thursday.

"Whether North Korea tests or not is up to North Korea," Glyn Davies, the top U.S. envoy for North Korean diplomacy, said in the South Korean capital of Seoul.

"We hope they don't do it. We call on them not to do it," Davies said after a meeting with South Korean officials. "This is not a moment to increase tensions on the Korean peninsula."

The North was banned from developing missile and nuclear technology under sanctions dating from its 2006 and 2009 nuclear tests.

A South Korean military official said the concern now is that Pyongyang could undertake a third nuclear test using highly enriched uranium for the first time, opening a second path to a bomb.

North Korea's 2006 nuclear test using plutonium produced a puny yield equivalent to one kiloton of TNT - compared with 13-18 kilotons for the Hiroshima bomb - and U.S. intelligence estimates put the 2009 test's yield at roughly two kilotons

North Korea is estimated to have enough fissile material for about a dozen plutonium warheads, although estimates vary, and intelligence reports suggest that it has been enriching uranium to supplement that stock and give it a second path to the bomb.

According to estimates from the Institute for Science and International Security from late 2012, North Korea could have enough weapons grade uranium for 21-32 nuclear weapons by 2016 if it used one centrifuge at its Yongbyon nuclear plant to enrich uranium to weapons grade.

North Korea gave no time-frame for the coming test and often employs harsh rhetoric in response to U.N. and U.S. actions that it sees as hostile.

Its long-range rockets are not seen as capable of reaching the United States mainland and it is not believed to have the technology to mount a nuclear warhead on a long-range missile.

The bellicose statement on Thursday appeared to dent any remaining hopes that Kim Jong-un, believed to be 30 years old, would pursue a different path from his father Kim Jong-il, who oversaw the country's military and nuclear programs.

The older Kim died in December 2011.

"The UNSC (Security Council) resolution masterminded by the U.S. has brought its hostile policy towards the Democratic Peoples Republic of Korea (North Korea) to its most dangerous stage," the commission was quoted as saying.

(Additional reporting by Christine Kim in SEOUL, Ben Blanchard and Sui-Lee Wee in Beijing; Writing by David Chance; Editing by Raju Gopalakrishnan)

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Police advice to Punggol East voters on Polling Day

SINGAPORE: Voters in the Punggol East by-election are advised to take public transport or where possible, walk to their polling stations on 26 January.

Parking is not allowed within the premises of the polling stations located in places such as schools.

For polling stations located under HDB void decks, the parking lots immediately fronting the polling stations will be closed to facilitate the polling activities.

There will be special drop-off points at each polling station for vehicles conveying sick, infirm or disabled persons.

Security checks will be carried out on bags and large items brought into the polling stations.

Voters are advised not to bring along large bags and to leave the voting stations after casting their votes.

The police have also advised members of the public not to loiter around the vicinity of the polling stations.

- CNA/ck

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15 kg heroin recovered from near India-Pakistan border

AMRITSAR: Border Security Force (BSF) on Thursday recovered 15 kilogram heroin valued at around Rs 75 crore in the international market along with 1 desi Pak made pistol following the arrest of an Indian smuggler Bhupinder Singh from Dera Baba Nanak Sector.

BSF Inspector General (Frontier) Aditya Mishra informed that a BSF party spotted some movement near Borde Out Post Rosse in Dera Baba Nanak sector at around 9 AM on Thursday. Upon seeing the smugglers the BSF patrolling party challenged them following which they tried to escape but one of the smuggler was nabbed on the spot while two of his accomplice managed to escape.

The arrested smuggler was identified as Bhupinder Singh resident of Phakkiwan village falling under Kalanaur in Gurdaspur district while his accomplice Sukhdeep Singh and another unidentified person managed to escape taking benefit of layer of fog in the area. Besides contraband and weapon, BSF also recovered 2 magazine, 15 rounds and 1 mobile phone. On Tuesday BSF had recovered 10 kg heroin in Amritsar sector.

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Women have caught up to men on lung cancer risk

Smoke like a man, die like a man.

U.S. women who smoke today have a much greater risk of dying from lung cancer than they did decades ago, partly because they are starting younger and smoking more — that is, they are lighting up like men, new research shows.

Women also have caught up with men in their risk of dying from smoking-related illnesses. Lung cancer risk leveled off in the 1980s for men but is still rising for women.

"It's a massive failure in prevention," said one study leader, Dr. Michael Thun of the American Cancer Society. And it's likely to repeat itself in places like China and Indonesia where smoking is growing, he said. About 1.3 billion people worldwide smoke.

The research is in Thursday's New England Journal of Medicine. It is one of the most comprehensive looks ever at long-term trends in the effects of smoking and includes the first generation of U.S. women who started early in life and continued for decades, long enough for health effects to show up.

The U.S. has more than 35 million smokers — about 20 percent of men and 18 percent of women. The percentage of people who smoke is far lower than it used to be; rates peaked around 1960 in men and two decades later in women.

Researchers wanted to know if smoking is still as deadly as it was in the 1980s, given that cigarettes have changed (less tar), many smokers have quit, and treatments for many smoking-related diseases have improved.

They also wanted to know more about smoking and women. The famous surgeon general's report in 1964 said smoking could cause lung cancer in men, but evidence was lacking in women at the time since relatively few of them had smoked long enough.

One study, led by Dr. Prabhat Jha of the Center for Global Health Research in Toronto, looked at about 217,000 Americans in federal health surveys between 1997 and 2004.

A second study, led by Thun, tracked smoking-related deaths through three periods — 1959-65, 1982-88 and 2000-10 — using seven large population health surveys covering more than 2.2 million people.

Among the findings:

— The risk of dying of lung cancer was more than 25 times higher for female smokers in recent years than for women who never smoked. In the 1960s, it was only three times higher. One reason: After World War II, women started taking up the habit at a younger age and began smoking more.

—A person who never smoked was about twice as likely as a current smoker to live to age 80. For women, the chances of surviving that long were 70 percent for those who never smoked and 38 percent for smokers. In men, the numbers were 61 percent and 26 percent.

—Smokers in the U.S. are three times more likely to die between ages 25 and 79 than non-smokers are. About 60 percent of those deaths are attributable to smoking.

—Women are far less likely to quit smoking than men are. Among people 65 to 69, the ratio of former to current smokers is 4-to-1 for men and 2-to-1 for women.

—Smoking shaves more than 10 years off the average life span, but quitting at any age buys time. Quitting by age 40 avoids nearly all the excess risk of death from smoking. Men and women who quit when they were 25 to 34 years old gained 10 years; stopping at ages 35 to 44 gained 9 years; at ages 45 to 54, six years; at ages 55 to 64, four years.

—The risk of dying from other lung diseases such as emphysema and chronic bronchitis is rising in men and women, and the rise in men is a surprise because their lung cancer risk leveled off in 1980s.

Changes in cigarettes since the 1960s are a "plausible explanation" for the rise in non-cancer lung deaths, researchers write. Most smokers switched to cigarettes that were lower in tar and nicotine as measured by tests with machines, "but smokers inhaled more deeply to get the nicotine they were used to," Thun said. Deeper inhalation is consistent with the kind of lung damage seen in the illnesses that are rising, he said.

Scientists have made scant progress against lung cancer compared with other forms of the disease, and it remains the leading cause of cancer deaths worldwide. More than 160,000 people die of it in the U.S. each year.

The federal government, the Canadian Institutes of Health Research, the Bill and Melinda Gates Foundation, the cancer society and several universities paid for the new studies. Thun testified against tobacco companies in class-action lawsuits challenging the supposed benefits of cigarettes with reduced tar and nicotine, but he donated his payment to the cancer society.

Smoking needs more attention as a health hazard, Dr. Steven A. Schroeder of the University of California, San Francisco, wrote in a commentary in the journal.

"More women die of lung cancer than of breast cancer. But there is no 'race for the cure' for lung cancer, no brown ribbon" or high-profile advocacy groups for lung cancer, he wrote.

Kathy DeJoseph, 62, of suburban Atlanta, finally quit smoking after 40 years — to qualify for lung cancer surgery last year.

"I tried everything that came along, I just never could do it," even while having chemotherapy, she said.

It's a powerful addiction, she said: "I still every day have to resist wanting to go buy a pack."

___

Online:

American Cancer Society: http://www.cancer.org

National Cancer Institute: http://www.cancer.gov/cancertopics/tobacco/smoking and http://www.cancer.gov/cancertopics/types/lung

Medical journal: http://www.nejm.org

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Marilynn Marchione can be followed at http://twitter.com/MMarchioneAP

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Pentagon to Allow Women in Combat

Defense Secretary Leon Panetta will lift a longstanding ban on women serving in combat, according to senior defense officials.

The services have until this May to come up with a plan to implement the change, according to a Defense Department official.

That means the changes could come into effect as early as May, though the services will have until January 2016 to complete the implementation of the changes.

"We certainly want to see this executed responsibly but in a reasonable time frame, so I would hope that this doesn't get dragged out," said former Marine Capt. Zoe Bedell, who joined a recent lawsuit aimed at getting women on the battlefield.

The military services also will have until January 2016 to seek waivers for certain jobs -- but those waivers will require a personal approval from the secretary of defense and will have to be based on rationales other than the direct combat exclusion rule.

The move to allow women in combat, first reported by the Associated Press, was not expected this week, although there has been a concerted effort by the Obama administration to further open up the armed forces to women.

The Joint Chiefs of Staff unanimously recommended in January to Secretary Panetta that the direct combat exclusion rule should be lifted.

"I can confirm media reports that the secretary and the chairman are expected to announce the lifting of the direct combat exclusion rule for women in the military," said a senior Defense Department official. "This policy change will initiate a process whereby the services will develop plans to implement this decision, which was made by the secretary of defense upon the recommendation of the Joint Chiefs of Staff."

Chairman of the Joint Chiefs Gen. Martin Dempsey sent Panetta a memo earlier this month entitled, "Women in Service Implementation Plan."

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"The time has come to rescind the direct combat exclusion rule for women and to eliminate all unnecessary gender-based barriers to service," the memo read.

"To implement these initiatives successfully and without sacrificing our warfighting capability or the trust of the American people, we will need time to get it right," he said in the memo, referring to the 2016 horizon.

Women have been officially prohibited from serving in combat since a 1994 rule that barred them from serving in ground combat units. That does not mean they have been immune from danger or from combat.

As Martha Raddatz reported in 2009, women have served in support positions on and off the frontlines in Iraq and Afghanistan, where war is waged on street corners and in markets, putting them at equal risk. Hundreds of thousands of women deployed with the military to those two war zones over the past decade. Hundreds have died.

READ MORE: Female Warriors Engage in Combat in Iraq, Afghanistan

"The reality of the battlefield has changed really since the Vietnam era to where it is today," said Rep. Tammy Duckworth, D-Ill., a former military helicopter pilot who lost both her legs in combat. "Those distinctions on what is combat and what is not really are falling aside. So I think that after having seen women, men, folks who -- cooks, clerks, truck drivers -- serve in combat conditions, the reality is women are already in combat."

Woman have been able to fly combat sorties since 1993. In 2010, the Navy allowed them on submarines. But lifting restrictions on service in frontline ground combat units will break a key barrier in the military.

READ MORE: Smooth Sailing for First Women to Serve on Navy Submarines

READ MORE: Female Fighter Pilot Breaks Gender Barriers

Panetta's decision will set a January 2016 deadline for the military service branches to argue that there are military roles that should remain closed to women.

In February 2012 the Defense Department opened up 14,500 positions to women that had previously been limited to men and lifted a rule that prohibited women from living with combat units.

Panetta also directed the services to examine ways to open more combat roles to women.

However, the ban on direct combat positions has remained in place.

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Cameron promises Britons straight choice on EU exit

LONDON (Reuters) - Prime Minister David Cameron promised on Wednesday to give Britons a referendum choice on whether to stay in the European Union or leave if he wins an election in 2015, placing a question mark over Britain's membership for years.

Cameron ended months of speculation by announcing in a speech the plan for a vote sometime between 2015 and the end of 2017, shrugging off warnings that this could imperil Britain's economic prospects and alienate its biggest trading partner.

He said Britain, a member of the European Economic Community for 40 years, did not want to retreat from the world but that the island nation's public disillusionment with the EU was at "an all-time high".

"It is time for the British people to have their say. It is time for us to settle this question about Britain and Europe," Cameron said. His Conservative party will campaign for the 2015 election promising to renegotiate Britain's EU membership.

"When we have negotiated that new settlement, we will give the British people a referendum with a very simple in or out choice to stay in the European Union on these new terms; or come out altogether. It will be an in-out referendum."

The speech firmly ties Cameron to an issue that was the bane of a generation of Conservative leaders. In the past, he has tried to avoid partisan fights over Europe, the undoing of the last two Conservative prime ministers, John Major and Margaret Thatcher.

Britain would seek to claw back powers from Brussels, he said, a proposal that will be difficult to sell to other European countries. London will do an "audit" to determine which powers Brussels has that should be delegated to member states.

Sterling fell to its lowest in nearly five months against the dollar on Wednesday as Cameron was speaking.

The response from EU partners was predictably frosty. French Foreign Minister Laurent Fabius quipped: "If Britain wants to leave Europe we will roll out the red carpet for you," echoing Cameron himself, who once used the same words to invite rich Frenchmen alienated by high taxes to move to Britain.

German Foreign Minister Guido Westerwelle said his country wanted Britain to remain a full EU member, but London could not expect to pick and choose the aspects of membership it liked.

Business leaders have warned that the prospect of years of doubt over Britain's EU membership would damage the investment climate.

"Having a referendum creates more uncertainty and we don't need that," Martin Sorrell, chief executive of advertising giant WPP, told the World Economic Forum in Davos.

"This is a political decision. This is not an economic decision. This isn't good news. You added another reason why people will postpone investment decisions."

The speech also opens a rift with Cameron's junior coalition partners, the Liberal Democrats. Their leader, Deputy Prime Minister Nick Clegg, said the plan would undermine a fragile economic recovery.

And even allies further afield are wary: the United States has said it wants Britain to remain inside the EU with "a strong voice".

But Eurosceptics in Cameron's party were thrilled by the speech. Conservative lawmaker Peter Bone called it "a terrific victory" that would unify 98 percent of the party. "He's the first prime minister to say he wants to bring back powers from Brussels," Bone told Reuters. "It's pretty powerful stuff".

Whether Cameron will ever hold the referendum remains as uncertain as the Conservatives' chances of winning the next election in 2015.

They trail the opposition Labour party in opinion polls, and the coalition government is grappling with a stagnating economy as it pushes through public spending cuts to reduce Britain's large budget deficit.

Cameron said he would prefer Britain, the world's sixth biggest economy, to remain inside the 27-nation EU. As long as he secured the reforms he wants, he would campaign for Britain to stay inside the EU "with all my heart and soul".

But he also made clear he believed the EU must be radically reformed. It was riskier to maintain the status quo than to change, he said.

"The biggest danger to the European Union comes not from those who advocate change, but from those who denounce new thinking as heresy," he said.

"WAFER THIN" CONSENT

The euro zone debt crisis was forcing the bloc to change, and Britain would fight to make sure new rules were fair to countries that didn't use the common currency, he said. Britain is the largest of the 10 EU members that do not use the euro.

Democratic consent for the EU in Britain was now "wafer thin", he said, reflecting the results of opinion polls that show a slim majority would vote to leave the bloc and the rise of the UK Independence Party that favors complete withdrawal.

"Some people say that to point this out is irresponsible, creates uncertainty for business and puts a question mark over Britain's place in the European Union," said Cameron. "But the question mark is already there: ignoring it won't make it go away."

Asked after the speech whether other EU countries would agree to renegotiate Britain's membership, Cameron said he was an optimist and that there was "every chance of success."

"I want to be the prime minister who confronts and gets the right answer for Britain on these kind of issues," he said.

It is nearly 40 years since British voters last had a say in a referendum on Britain's membership of the European club. A 1975 vote saw just over 67 percent opt to stay inside with nearly 33 percent wanting to leave.

(Additional reporting by Paul Taylor in Davos and Alexandra Hudson in Berlin; Editing by Guy Faulconbridge and Peter Graff)

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PUB, PWN Technologies sign MOU

SINGAPORE: National water agency PUB will work with a Dutch water supply company in the search for innovative water solutions to meet Singapore's growing water demand more efficiently and boost its status as a global hydrohub.

PUB signed a Memorandum of Understanding with PWN Technologies to collaborate on advanced water treatment, as well as strengthen Singapore-Dutch industry relations.

Both sides will work together to reap scientific and technological benefits by developing knowledge-intensive programs and projects.

The MOU was signed following a promising trial of PWN Technologies' demonstration plant at Choa Chu Kang Waterworks.

-CNA/ac

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India Air Force airlifts 150 stranded people in Kishtwar

JAMMU: Braving minus six-degree temperature and chilly winds, India Air Force (IAF) today came to the rescue and airlifted 150 stranded people, including women and children in snow-bound Kishtwar district of Jammu and Kashmir.

"IAF had airlifted 150 stranded people including women and children from various areas of Kishtwar district today", public relation officer (PRO), ministry of defence (MoD), S N Acharya said.

MI-17 chopper was pressed into service to ferry stranded passengers in highly snow-bound areas of Kishtwar, Nawapanchi, Sondar and Intion in several sorties, Acharya said.

The air operation was supervised by Air Commandore P Patangay and divisional commissioner Jammu Pradeep Gupta.

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Foes of NYC soda size limit doubt racial fairness

NEW YORK (AP) — Opponents of the city's limit on the size of sugary drinks are raising questions of racial fairness alongside other complaints as the novel restriction faces a court test.

The NAACP's New York state branch and the Hispanic Federation have joined beverage makers and sellers in trying to stop the rule from taking effect March 12. With a hearing set Wednesday, critics are attacking what they call an inconsistent and undemocratic regulation, while city officials and health experts defend it as a pioneering and proper move to fight obesity.

The issue is complex for the minority advocates, especially given obesity rates that are higher than average among blacks and Hispanics, according to the federal Centers for Disease Control. The groups say in court papers they're concerned about the discrepancy, but the soda rule will unduly harm minority businesses and "freedom of choice in low-income communities."

The latest in a line of healthy-eating initiatives during Mayor Michael Bloomberg's administration, the beverage rule bars restaurants and many other eateries from selling high-sugar drinks in cups or containers bigger than 16 ounces. Violations could bring $200 fines; the city doesn't plan to start imposing those until June.

The city Board of Health OK'd the measure in September. Officials cited the city's rising obesity rate — about 24 percent of adults, up from 18 percent in 2002 — and pointed to studies linking sugary drinks to weight gain. Care for obesity-related illnesses costs more than $4.7 billion a year citywide, with government programs paying about 60 percent of that, according to city Health Commissioner Dr. Thomas Farley.

"It would be irresponsible for (the health board) not to act in the face of an epidemic of this proportion," the city says in court papers. The National Association of Local Boards of Health and several public health scholars have backed the city's position in filings of their own.

Opponents portray the regulation as government nagging that turns sugary drinks into a scapegoat when many factors are at play in the nation's growing girth.

The American Beverage Association and other groups, including movie theater owners and Korean grocers, sued. They argue that the first-of-its-kind restriction should have gone before the elected City Council instead of being approved by the Bloomberg-appointed health board.

Five City Council members echo that view in a court filing, saying the Council is "the proper forum for balancing the city's myriad interests in matters of public health." The Bloomberg administration counters that the health board, made up of doctors and other health professionals, has the "specialized expertise" needed to make the call on limiting cola sizes.

The suit also argues the rule is too narrow to be fair. Alcohol, unsweetened juice and milk-based drinks are excluded, as are supermarkets and many convenience stores — including 7-Eleven, home of the Big Gulp — that aren't subject to city health regulations.

The NAACP and the Hispanic Federation, a network of 100 northeastern groups, say minority-owned delis and corner stores will end up at a disadvantage compared to grocery chains.

"This sweeping regulation will no doubt burden and disproportionally impact minority-owned businesses at a time when these businesses can least afford it," they said in court papers. They say the city should focus instead on increasing physical education in schools.

During Bloomberg's 11-year tenure, the city also has made chain restaurants post calorie counts on their menus and barred artificial trans fats in french fries and other restaurant food.

In general, state and local governments have considerable authority to enact laws intended to protect people's health and safety, but it remains to be seen how a court will view a portion-size restriction, said Neal Fortin, director, Institute for Food Laws and Regulations at Michigan State University.

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Follow Jennifer Peltz at http://twitter.com/jennpeltz

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Biden, Clinton and the Medicare-Eligible Primary

Barack Obama was a 40-something fresh face when he won the presidency in 2008.  He's gotten older in four years, but he was up against another older man -- Mitt Romney -- to keep his job.

But Hillary Clinton and Joe Biden -- two of the top potential Democratic replacements for Barack Obama four years from now -- will be either in or approaching their 70s when the next presidential election rolls around.

Related: A new ABC News/Washington Post Poll finds Clinton with a 19 percent favorability advantage over Biden.

Smiling, jolly Biden sure did look like he could mount a campaign in a little under four years as he bounded along the inaugural parade route, hale and lively.

In an interview that aired on CNN today, Biden said he hasn't determined whether he'll seek the presidency in 2016.

"Oh there's a whole lot of reasons why I wouldn't run. I haven't made that decision and I don't have to make that decision for a while," Biden told CNN's Gloria Borger.

Asked if he's ready to run against Clinton in 2016, Biden said, "I haven't made that judgment and Hillary hasn't made that judgment."

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"In a couple years, I think he's going to take a hard look at it," Beau Biden, the vice president's son and the attorney general of Delaware, said on MSNBC. "I hope he does."

Clinton, in her final days as secretary of state, says she needs a rest from public service and politics. But there isn't anybody who doesn't see her as one of Democrats' top contenders to replace Obama in 2016. She'd be the first woman president, but she'd also be one of the oldest.

She's the most traveled secretary of state in history and newly eligible for Medicare -- she turned 65 on Oct. 26. But Clinton, before a fall and treatment for a blood clot, could clearly still keep up with her younger staffers on whirlwind round-the-globe tours.

She'd be the same age as Ronald Reagan when he took office as the oldest first-termer in history. Biden, at 70 right now, would be the oldest newly elected president to take the oath of office at 74.

Nancy Pelosi bristled -- and maybe rightfully so -- when a 20-something reporter asked recently if she should step down as leader of House Democrats to make room for a younger generation.

"Let's for a moment honor it as a legitimate question," Pelosi said, chuckling. "Although it's quite offensive, although you don't realize it, I guess."

She said the question would never be asked for a man. But it is true that the top three Democrats in the House are all in their 70s.  John Boehner, the top Republican in the country as speaker of the house, is 63. His two deputies are in their 40s.

Anecdotally, age could be a problem. Obama, after all, beat two older men. Bill Clinton beat three older men in presidential races if you count Ross Perot. But usually age is not the overriding issue in a campaign. Reagan actually scored points declaring at a debate with the younger Walter Mondale, "I am not going to exploit for political purposes my opponent's youth and inexperience."

We emailed the Yahoo! News columnist Jeff Greenfield, who has covered a lot of presidential campaigns, to weigh in.

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