Iran is threatening to resume uranium enrichment, and the United States says the threat is an attempt to intimidate the United Nations nuclear watchdog agency.
Iranian President Mohammad Khatami says Tehran might resume uranium enrichment if the International Atomic Energy Agency adopts a harsh resolution criticizing Iran for failing to cooperate fully with inspectors.
Mr. Khatami says the draft resolution under consideration is "very bad," but he added that for the moment, Iran wants to cooperate with the international community.
The U.S. ambassador to the I.A.E.A. says Iran's threats show Tehran has something to hide.
Diplomats say the draft resolution is expected to be approved this week at a meeting in Vienna.