An International Atomic Energy Agency (IAEA) report says Iran has built test sites for nuclear weapons.

The IAEA says Iran conducted high explosives testing aimed at simulating the detonation of nuclear weapons.  Iran is also accused of conducting research that is relevant only to nuclear weapons.

IAEA officials are demanding Iran provide an explanation.

Iranian officials say the IAEA is being directly manipulated by the United States.  Iran claims the current director of the IAEA, Yukiya Amano of Japan, is simply reading from a report that was made up by U.S. officials, and is baseless.