US-Israeli strikes on February 28 killed Iran’s leader but have not toppled the government, which now, from its perch on the Strait of Hormuz, has put the entire world economy on the war’s frontlines. The initial US operation of assassinating Supreme Leader Ali Khamenei has given way to a conflict that Washington cannot completely control, sharply limiting President Donald Trump’s options. Two weeks into a bloody air war, Iran holds many cards as it chokes the world’s oil supply and strikes U...