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.
Director of National Intelligence James Clapper says the danger of a devastating cyberattack is the No. 1 threat facing the U.S. He made the assessment Tuesday on Capitol Hill before the Senate Intelligence Committee hearing on worldwide threats.
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.
The new boom in natural gas from shale has changed the energy economy of the United States. But there's another giant reservoir of natural gas that lies under the ocean floor that, theoretically, could dwarf the shale boom.
No one had tapped this gas from the seabed until this week, when Japanese engineers pulled some up through a well from under the Pacific. The gas at issue here is called methane hydrate. Methane is natural gas; hydrate means there's water in it. In this case, the molecules of gas are trapped inside a sort of cage of water molecules.