If substantial U.S. intervention in Syria has already taken place, the unintended consequences could be catastrophic, especially for the Syrian people. If the U.S. decides to intervene in the near future, the costs would be unspeakably high and would almost certainly turn into an effort to install another controllable despot in Damascus that conforms more closely to Washington’s dictates, as s0-called humanitarian interventions tend to go.
More than a few think the US already is intervening via proxies in Turkey and elsewhere. Gosh, what could go wrong with another lunatic war for empire?
Wars have always been the one-percenters of two (or more) nations sending their ninety-niners to fight each other. At least medieval princes sometimes led from the front.