Visitors look at a missile display at a military museum in Tehran, Iran, on Tuesday, Sept. 17. 2019. Iranian Foreign Minister Mohammad Javad Zarif refused to rule out military conflict in the Middle East after the U.S. sent more troops and weapons to Saudi Arabia in response to an attack on oil fields the U.S. has blamed on the Islamic Republic. Photographer: Ali Mohammadi/Bloomberg
Iranian missiles at a military museum in Tehran, September 17, 2019. Bloomberg

Iran's strategy of covert aggression may have reached its limits