I ended the war in Iraq” is now a standard claim by President Obama. He makes the assertion in every debate and public appearance. The claim is wrong. It’s phony, and it’s made by a politician who tried relentlessly to block America’s most successful strategic operation of the war: the “surge.” On Feb. 5, 2007, and a few weeks later on Feb. 17, Sen. Obama voted against the surge. Among military analysts and historians, the surge of 20,000 additional troops into Iraq during the spring of 2007 is credited with reducing attacks on American troops and sectarian violence by 70...