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《华盛顿邮报》星期日晚上报导说，据了解这份情报的西方外交官和核专家透露，伊朗已在外国科学家的帮助下完成关键步骤，克服了技术难题。

The Washington Post reported on Sunday night that according to the statements of the western diplomats and nuclear experts who were familiar with the issue, Iran had achieved critical steps with the help of foreign scientists, and had conquered technical problems.

曾在国际原子能机构工作的一名前任官员说，伊朗取得的进展包括设计、测试引发核爆炸的爆炸装置。

A former IAEA official said that Iran's breakthrough included designing and testing the detonation device that could trigger nuclear explosion.