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It is too generous to say President Obama is leading from behind on Syria. A better description might be that he is getting dragged in by the ear. Yet bit by bit, pressured mainly by France but also by shifting opinion in Washington, the administration is sending signals that it knows it can’t avoid involvement in the Syrian civil war forever. Among influential figures on Capitol Hill who are putting new pressure on the president to better supply and arm the Syrian rebels is Rep. Mike Rogers, R-Mich., chairman of the House Intelligence Committee. “The deterioration in Syria is breathtakingly bad,” Rogers told National Journal in an interview, saying the possible collapse of the Syrian state into chaos is his “No. 1 national security priority in the region right...