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Putting a more specific estimate that he has in the past on the issue of how long it might take Iran to develop a nuclear weapon, President Obama has told Israel's Channel 2 TV that it could happen in "over a year or so" if efforts to dissuade Iran do not succeed.

The president also said that while he wants to resolve the issue diplomatically, he is keeping "all options on the table."

For its part, Iran has long said its nuclear program is only aimed a peaceful uses for that energy source.

U.S. government pronouncements about the danger of a major cyberattack can be confusing. The director of national intelligence, James Clapper, and the head of the U.S. military's Cyber Command, Army Gen. Keith Alexander, delivered mixed messages this week while testifying on Capitol Hill.

Whether it's green tea that warms you up, or coffee that gives you that morning lift, a new study finds both can help cut the risk of suffering a stroke.

The study, published in the American Heart Association journal Stroke, included 82,369 men and women in Japan.

Researchers found that the more green tea a person drank, the more it reduced the risk of suffering a stroke.