President Trump described the risky mission to rescue an Air Force colonel whose fighter jet had been shot down, but he offered no clear path out of the war.
The new deadline comes as the president and Iranian leaders have ramped up bombastic threats against one another.
Global leaders are struggling in their efforts to find a way to end the American-Israeli war on Iran, and they are spooked about what President Trump might do next.
President Trump taunted Iran on social media, while strikes continued in Iran, Israel, Lebanon and some Gulf states.
In an expletive-laced social media post, the president said Iran should open the Strait of Hormuz or he would bomb bridges and power plants.
President Trump first gave Iran 48 hours to reopen the vital oil shipping route on March 21. The deadline has been reset many times since.
The president said he would bomb Iran “back to the Stone Ages.” Until this administration, American leaders had insisted they were trying to follow international law in war.
In an expletive-filled social media post, Mr. Trump said Iran should open the Strait of Hormuz or he will bomb bridges and power plants.
The intelligence agency also executed a deception campaign aimed at drawing Iranian forces away from where the missing Air Force officer was hiding.
After Iran shot down a U.S. plane and U.S. forces pulled off a risky ground operation to extricate a stranded airman, both sides claimed victory. That confidence could fuel further escalation.