TEHRAN, May 23 (Xinhua) -- As U.S. and Iranian negotiators gear up for a fifth round of nuclear talks in Rome on Friday, analysts warn that uranium enrichment remains the critical sticking point, but ...

The fifth round of talks between Iran and the United States started Friday in the Italian capital of Rome with Oman's ...

The new sanctions come as Iran and the United States have held four rounds of talks on Tehran's nuclear program and the lifting of U.S. sanctions since April, with the fifth round scheduled to be held ...

美国方面坚称，根据协议，伊朗不能继续进行铀浓缩活动，并警告称，伊朗这样做将最终使该国能够获得核武器，而美国总统特朗普 (Trump)已誓言要阻止这种情况发生。