It’s highly unusual for a high-ranking soldier, let alone a high-ranking Marine, to publicly question White House and Pentagon policy. Yet that’s exactly what four-star Gen. James Amos, Commandant of the Marine Corps, did yesterday in Washington. Speaking at the Brookings Institute Tuesday, Amos said the Obama administration paved the way for the emergence of the Islamic State of Syria and Iraq (ISIS) by completely withdrawing American troops in 2011. “I have a hard time believing that had we been there, and worked with the government, and worked with parliament, and worked with the minister of defense, the minister of...