In an ultimatum delivered on Sunday Washington demanded that Iraq should close all its nuclear programs by March, a high-ranking source at the International Atomic Energy Agency in Vienna reported quoting statements of the White House official spokesmen. According to the source, the USA accused Tehran of violating its assurance in transparency of its nuclear facilities and programs. The accusation came after last week the IAEA international inspectors found plans in Iran to create special separators and other equipment to enrich uranium and produce weapon-graded plutonium that had not been voluntarily submitted for verification, the source said.