With his decision to attack Syria in a “limited” way, some are concerned about the possibility of future escalation.

But the truth is we are not at the foot of the Syrian escalator deciding whether or not to get on. We are already on board and have been riding it upwards for more than a year. The following timeline gives an idea:

As you can see, Syria already looks a lot like a proxy fight between the US on one hand and Russia and Iran on the other. No one in the administration has claimed a US strike now will resolve the situation inside the country or lessen tensions outside the country. In fact, those tensions are already escalating. Iran’s Ayatollah is threatening that we will “suffer loss” if we attack and some suggest Russia might come to Syria’s aid. What if these threats/concerns turn out not to be idle?

Bottom line: We have been escalating in Syria for nearly 2 years and it is extremely unlikely that a military strike will make further escalation by Assad, Putin or others less likely. We should not take this next step unless we are willing to also take the one that will come after that.