The Islamic Republic of Iran, facing demonstrations at home that threaten its very existence and more in Iraq that threaten that country’s Shi’ite proxy government, is resorting to a tested and true strategy. Fox News reports that “crowds of angry Iraqis protesting America’s recent airstrikes against an Iran-backed militia have laid siege to the U.S. Embassy compound in Baghdad Tuesday, chanting ‘Down, Down USA!’ and storming through a main gate, prompting troops to fire back tear gas in response.”President Trump tweeted: “Iran killed an American contractor, wounding many. We strongly responded, and always will. Now Iran is orchestrating an...