Lawrence: Trump lies about Vietnam War dead in a desperate attempt to justify troops killed in Iran

Tonight on The Last Word: Donald Trump backs down from attacking Iran for the third day. Also, Trump says he could “take over” Iran if he wanted to. Plus, Republicans eye a fast track for Jay Clayton’s confirmation as Director of National Intelligence. And Josh Turek wins the Democratic nomination for Senate in Iowa. Sen. Peter Welch, Lt. Gen. Mark Hertling,…