What are Trump's options now that he's said the ceasefire is over?

President Donald Trump, in a marathon of media engagements on Wednesday at the NATO summit, declared the U.S.-Iran ceasefire “over,” warned that the United States could carry out additional strikes on them that night, but also downplayed the possibility of an escalation, which he’s long threatened.

Trump’s about-face on the memorandum of understanding, which the two sides signed last month, came in the aftermath of a significant U.S. retaliatory operation on Tuesday after Iranian forces targeted three commercial vessels off its coast.