Iran has denied Russian claims that Tehran has fallen behind on payments for work on the Bushehr nuclear power plant in southern Iran.

Iran's chief nuclear negotiator, Ali Larijani, will meet with International Atomic Energy Agency chief Muhammad el-Baradei in Vienna on February 20.

China says it will strengthen regulations on the export of nuclear goods for both civilian and military use to help prevent nuclear terrorism and proliferation.

The head of the United Nations' nuclear watchdog agency says the agency is ready to resume inspections in North Korea following the North's agreement to curb its nuclear activities.

Iran says it wants talks to resolve its nuclear dispute with the West, but insists it will not suspend uranium-enrichment activities.

Iran's top nuclear negotiator, Ali Larijani, has canceled a visit to Europe, where he was supposed to hold talks on the international standoff over Iran's nuclear program.

International nuclear experts say Iran has linked up two more sets of centrifuges at its Natanz nuclear plant, this time underground.

Russian President Vladimir Putin says he supports a proposal by the U.N. nuclear agency for the international community to hold off sanctions on Iran if the Tehran government suspends sensitive nuclear activities.

Iran says it is considering an offer from the United Nations which would suspend sanctions against Iran for a certain period of time if Iran stops its sensitive nuclear work.

Iran says it needs more time to study a proposal from the head of the United Nations' nuclear watchdog agency for a nuclear "timeout."

A new team of three International Atomic Energy Agency (IAEA) inspectors arrived in Iran.

The United States says it is "outrageous" that Iran is demanding the removal of the United Nations official in charge of overseeing inspections of Iran's nuclear program.