新一轮伊朗核问题谈判在维也纳举行

Iran and a group of six world powers continue their negotiations on Iran\'s nuclear program Wednesday, as they seek a longterm agreement to ensure it is peaceful in nature.

This round of talks in Vienna began Tuesday with what a spokesman for European Union foreign policy chief Catherine Ashton called "substantive and useful" discussions. The spokesman, Michael Mann, said he would not make any predictions about the outcome.

Iran and the group that includes the United States, Britain, China, France, Russia and Germany reached an interim deal last year for Iran to curb its most sensitive nuclear activity in exchange for limited sanctions relief.

As the talks go on, a large group of U.S. senators is calling for a set of "core principles" it wants to see in a permanent deal.

本轮谈判星期二在维也纳开始举行，欧盟外交政策首脑阿什顿的发言人迈克尔•曼说，各方代表进行了具有实质意义的有益讨论。他表示不会对谈判结果做出任何预测。

伊朗和六强国去年达成一项临时协议，规定伊朗限制其最敏感的核活动，以换取国际社会放松制裁。六强国包括美国、英国、中国、法国、俄罗斯和德国。

在谈判进行之际，多名美国参议员要求长期协议应包含一系列“核心原则”。