Key restrictions on Iran's nuclear programme imposed under an internationally negotiated deal will start to ease years before the 15-year accord expires, advancing Tehran's ability to build a bomb even before the end the pact, according to a document obtained today by The Associated Press.
The document is the only text linked to last year's deal between Iran and six foreign powers that hasn't been made public, although US officials say members of Congress have been able to see it.
It was given to the AP by a diplomat whose work has focused on Iran's nuclear program for more than a decade, and its authenticity was confirmed by another diplomat who possesses the same document.
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The diplomat who shared the document with the AP described it as an add-on agreement to the nuclear deal. But while formally separate from that accord, he said that it was in effect an integral part of the deal and had been approved both by Iran and the US, Russia, China, Britain, France and Germany, the six powers that negotiated the deal with Tehran.
Details published earlier outline most restraints on Iran's nuclear program meant to reduce the threat that Tehran will turn nuclear activities it says are peaceful to making weapons.
But while some of the constraints extend for 15 years, documents in the public domain are short on details of what happens with Iran's most proliferation-prone nuclear activity its uranium enrichment beyond the first 10 years of the agreement.