The United Nations atomic watchdog is said to have pulled its last remaining inspectors out of Iran following the implementation of a new law that criminalizes international monitoring, deepening the blackout over Tehran’s nuclear program.

Departure follows Tehran's suspension of cooperation with UN atomic agency and rising threats against IAEA leadership.

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.