Pakistan Prime Minister Shehbaz Sharif had asked Trump for a two-week delay of his Iran deadline, and for the Strait of Hormuz to open for the same period.
The 45-day ceasefire proposal, which could lead to an end to the war, is reportedly being discussed by the U.S., Iran and a group of regional mediators.
Donald Trump warned the U.S. will completely obliterate all of Iran's electric generating plants, oil wells and Kharg Island if a peace deal is not reached.