The White House is bristling at the suggestion that President Obama is becoming more warlike and, therefore, more like his predecessor, George W. Bush. At the White House press briefing on Friday, reporters asked presidential spokesman Josh Earnest for his reaction to the cover photo of the Economist magazine, which depicts Mr. Obama in the flight suit worn by Mr. Bush during the Iraq war in 2003, with the new caption “Mission Relaunched.” It’s a reference to Mr. Obama renewing the war against Islamic State terrorists in Iraq and Syria. But Mr. Earnest called “unfair” the suggestion that the president...