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. effort to force open a safe passage for commercial ships through the Strait of Hormuz, a vital waterway through which major oil and gas supplies, fertilizer and other petroleum products passed before the war. Iran’s effective closure of the strait has sent fuel prices skyrocketing, rattled the global economy and put enormous economic pressure on countries, including major powers such as China.…