Putin's now universally known initiative on chemical weapons control in Syria has, in my opinion, opened the door to essential American character traits which may preordain our getting more involved in Syria's war.
We don't like to be lied to. We particularly don't like to be played for chumps. When we do decide to address a problem, we are impatient. We are capable of revenge, but as one pundit has put it, "...we have the watches, the Middle Easterners have the time." We don't have the patience for cold revenge, we like ours hot. And if Putin is playing us for chumps, he has all but written a scenario for American intervention.