Mohammed Alaa Ghanem, writing in Politico, wants the US to target Assad, not just ISIS:
Assad’s record presents clear evidence: If his regime somehow survives the current conflict, ISIL will mysteriously regenerate itself while Assad approvingly observes. Unless the United States wants to be striking ISIL in Syria yet again in another five to 10 years, America should hit Assad now.
Larison pulls his hair out:
Attacking Syrian regime forces would drag the U.S. into a much larger, riskier, and more ambitious campaign that could have very dangerous consequences for U.S. pilots and could create yet another crisis in U.S.-Russian relations. The war against ISIS already promises to be long and desultory, and a war against the Syrian regime would make everything harder, raise the costs of the ongoing campaign, and risk the possibility of regime collapse and the even greater chaos that would consume the country as a result. The war against ISIS is a serious mistake, but fighting both the regime and ISIS at the same time would be a disaster.