The United States and Iran remotely signed their memorandum of understanding to end the war and open the Strait of Hormuz for the second time on Wednesday, the White House told the Washington Examiner.

The signing means Iran will “instantly reopen” the Strait of Hormuz and the U.S. will “immediately lift” its naval blockade on all Iranian vessels entering or exiting ports in the water passageway, according to Pakistani Prime Minister Shehbaz Sharif. Pakistan has been a key mediator in peace talks between Washington and Tehran.