He promised to refer any such violation to the Security Council.
If the board meets and determines that a threat exists, it must refer the matter to the Security Council.
They are expected to refer the matter to the Security Council.
American officials expect the atomic energy agency to meet in early January and refer the issue to the Security Council within days.
Last month administration officials said they wanted to refer the matter to the Security Council.
Iran could have been referred to the Security Council then for sanctions.
American officials said today that even if the issue is referred to the Security Council, there are a range of possible actions short of economic sanctions.
The board is expected to decide whether Iran has curbed its nuclear activities or should be referred to the Security Council for sanctions.
It would take a majority of the atomic energy agency's 35 board members to refer Iran formally to the Security Council.
At that time, the nations could decide whether Iran should be referred to the Security Council for possible censure.
