(FoxNews.com) Iran has agreed to reinstate the U.N. nuclear watchdog agency into talks over its nuclear program after the U.S. lifted sanctions last year.
In January, the U.S. granted Iran sanctions relief in exchange for its compliance with a deal with major powers, which denies Iran a nuclear weapon. The other members of the deal are the U.K., France, Russia, China and Germany.
The move came amid an effort by some U.S. legislators to bring back economic sanctions on Iran.
According to the Associated Press, a letter from four GOP senators asserts that if Iran fails to meet its international obligations, sanctions will return, which in turn will undermine the nuclear deal.
“We can see by your own public remarks that your administration’s determination to change our behavior by imposing new Iranian sanctions will prove to be a poor substitute for the full implementation of the agreement,” the senators wrote Iran’s President Hassan Rouhani.