President Trump cited progress in the negotiations when canceling a threatened attack on Iran over the weekend. Iran said there were no current talks with the United States.

© Reuters

President Trump has repeatedly threatened to escalate the war with Iran, only to abruptly back down. Saudi Arabia said its leader had urged Mr. Trump not to renew attacks.

© Pete Marovich for The New York Times

During a fleeting truce, Iranians covertly devised a plan to raise the war’s costs for President Trump if U.S. forces attacked anew.

© Hadi Mizban/Associated Press