"By Donald Trump’s own admission, he was caught completely by surprise that Iran struck back against other Gulf nations."

He didn't think that US military bases would face retaliation? Or that he would be putting Americans at risk?

"Within the first two weeks of the war, Iran’s attacks on U.S. military bases caused an estimated $800 million in damage, according to a report by the Center for Strategic and International Studies and a BBC analysis."

https://newrepublic.com/post/208211/us-troops-abandon-military-bases-persian-gulf-kuwait-iran-strikes