Should Washington have intervened earlier in the Syrian Civil War to topple the Assad regime or defeat ISIS? Explain your reasoning.

In your opinion, should Washington have intervened earlier in the Syrian Civil War to topple the Assad regime or defeat ISIS? Explain your reasoning. Cite examples if you can.
We have spent a considerable amount of time throughout this course discussing the negative effects of the Arab Spring, such as violence, empowered Islamists, and external intervention.

With that said, what do you see as the most positive development resulting from the Arab Spring? Explain your reasoning. Cite examples if you can.