"It's a simple fact of our Constitution that if Congress does not approve that deal, then it may not last."
The secretary of state, due in Switzerland Sunday for talks on Iran's nuclear program, said he hopes a deal can be reach in the coming days.
The two leaders spoke by phone Saturday, calling on separatists to respect a ceasefire agreement in eastern Ukraine.
Global and U.S. prices fell hard after a report that the world is still producing more oil than can either be stored or sold.
Measles is "a psychosomatic illness," German biologist Stefan Lanka claims, in spite of the facts contrary to his opinion.
The decision comes after a lawsuit was filed by two female Muslim teachers from North Rhine-Westphalia.
One German commentator suggested Greece should pay compensation to countries conquered by Alexander the Great.
World powers have begun talks about a U.N. Security Council resolution to lift U.N. sanctions on Iran if a nuclear agreement is struck with Tehran, according to an exclusive Reuters report.
Supreme Leader Ayatollah Khamenei is seizing on the letter as political ammunition.
It was unclear whether any potential assistance to the NATO member's eastern neighbor would include U.S.-made weapons.
The pretzel was badly burnt, so was never edible, much to the disappointment of the hungry archaeologists who discovered it.
The Federal Reserve raised objections to two foreign-based banks in annual exams; Bank of America gets a re-do.
Australia's leading health agency has rejected homeopathy as true medicine for any of the 61 conditions it studied.
Leaders of European countries have rejected the idea of a standing European army to counter Russian hostility.
Japan is concerned the visit could be taken as a gesture in support of Russian control of the region.
Former NSA chief Michael Hayden also defended the NSA's alleged wiretapping as he addressed an audience at a think tank.
Are 47 senators guilty of treason, or are they patriots standing up to what some call the tyranny of President Barack Obama?
Ukraine says rebels are removing heavy weaponry from the front and concentrating it near Donetsk.
Germany’s ambassador to India strongly condemned the professor's "discriminating generalizations against male Indian students."
Driving the dollar was speculation the Federal Reserve would start lifting interest rates around June or July.
The new left-wing Greek government has tried the patience of its EU peers.
Apple Watch will be available in stores April 24, but you can order one starting April 10.