Mayor Pete, as he likes to be called, who has led the cry that Iran's shooting down of a Ukrainian airliner using a Russian missile is somehow the fault of an American president, Donald J. Trump, is among those who say it was "collateral damage" resulting from Trump trashing the flawed and unworkable Iran nuclear deal and his zapping of terrorist Quds Force commander Gen. Qassem Soleimani. Knowing that Democrats obey Rahm Emanuel's famous observation that a crisis is a terrible thing to waste, Mayor Pete wasted no time attaching his name to the slander that the 176 innocents aboard...