This is not the run up to the midterm elections that Republicans wanted. A year and a half after winning the White House by promising to lower costs and end wars, Donald Trump is a wartime president overseeing surging energy costs and an escalating overseas conflict that many in his own party do not like. He offered little clarity to a nation eager for answers this week during a prime-time address from the White House, his first since the U.S. and Israel attacked Iran more than a month ago, simultaneously suggesting that the war was ending and expanding. “Thanks to...