Iran said it was suspending cooperation with the U.N. atomic agency, denying international inspectors the chance to assess the damage done by U.S. and Israeli airstrikes on its main nuclear sites and setting up a new clash with Washington and other Western powers.

As Iran suspends its cooperation with the International Atomic Energy Agency, its deputy foreign minister is speaking out about the damage to his country's nuclear program. NBC's Richard Engel report for TODAY from Tehran.