President Trump said Monday the U.S. ceasefire with Iran is “on life support” after he rejected Iran’s proposal to end the war and reopen the Strait of Hormuz as “stupid.”

President Donald Trump: “After reading that piece of garbage they sent us — I didn’t even finish reading it. I said, 'Am I going to waste my time reading it?' I would say it’s one of the weakest. Right now it’s on life support.”

Iranian officials said they were prepared to retaliate if attacked, warning the U.S. would be “surprised” by Iran’s response. 

Meanwhile, The Wall Street Journal reports the United Arab Emirates secretly carried out military strikes on Iran, including an April attack on a refinery on Lavan Island in the Persian Gulf. The Journal reports the Trump administration quietly welcomed the participation of the UAE and any other Gulf states wanting to join in the fight.