The U.S. military must figure out how to keep Iraq from breaking apart while also preventing neighboring Iran from turning Iraq into a proxy state.. It makes no sense for a nation to treat its enemies kindly and its allies harshly. Any nation that tries this foolish approach will see its enemies grow stronger and more dangerous, and will lose its allies when it abandons them. ... The man most responsible for the failure of the U.S. to give adequate support to the Kurds is Brett McGurk, President Trump’s special envoy for the Global Coalition to Counter ISIS. He held...