More: The deal, which is between the U.S. and Iran, has not been made public, and officials have sometimes offered contradictory interpretations of what is in it. While Israel is not party to the agreement, it is part of the war: It joined the U.S. in launching strikes on Iran on Feb. 28, and has since fought the Iran-backed Hezbollah militant group in Lebanon and seized large swaths of that country.

Iranian Foreign Minister Abbas Araghchi said Israel's continued occupation of southern Lebanon would violate the deal.

"Without the withdrawal of Israeli forces from the territories they occupied during this war, the war has not fully come to an end," Araghchi said.