(FOX NEWS) — U.S. and Iranian negotiators have reached an agreement on a 60-day memorandum of understanding to extend the ceasefire and launch negotiations on Iran’s nuclear program, but President Donald Trump has yet to give it his final approval, U.S. sources told Fox News on Thursday.

Secretary of State Marco Rubio is set to meet with Pakistani Foreign Minister Ishaq ​Dar in Washington, D.C., on Friday.

Axios first reported news on the agreement.