Donald Trump's Promise to Build an Iron Dome Missile Defense System for the U.S.
Former President Donald Trump promised to build an Iron Dome missile defense system for the U.S. during a campaign rally in Michigan, but did not mention using it to defend against Canada. The Iron Dome is a missile defense system first used by Israel in 2011 to shoot down short-range rockets. Defense experts doubt a missile defense system can shield the entire U.S., as Trump suggests.