Why the need to show that Assad is directly implicated? Isn't he the supreme leader, etc. etc.? Obama should have asked for Congressional clearance at least a year ago, upon the very first (!) evidence of nerve agents having been used by the Syrian regime. The best Pres. Obama can do now is to seek that approval and carry it in his back pocket, if and when things get out of hand next time around, in Syria or elsewhere. If that does not happen we don't have a dual track as the title suggests and Putin will have scored a 1-2 this summer (remember Snowden?), without the US having been able to even land a punch. Russia & Iran are having a field day!
Trump: Middle East would be more stable if Saddam, Gaddafi still in power (Reuters)