WASHINGTON — The United States and Iran appeared to be moving closer Wednesday to an initial agreement to end the war, as U.S. President Trump sought to pressure Tehran with threats of a new wave of bombing if a deal is not reached.

Trump posted on social media that the two-month war could soon end and that oil and natural gas shipments disrupted by the conflict could restart. But he said that depends on Iran accepting a reported agreement that the president did not detail.

“If they don’t agree, the bombing starts,” Trump wrote.

Trump made his latest comments after he suspended a short-lived U.S.…