Hillary Clinton knew what she was talking about on Syria:

“They’re getting more sophisticated thanks to Russian imports. To have a no-fly zone you have to take out all of the air defense, many of which are located in populated areas. So our missiles, even if they are standoff missiles so we’re not putting our pilots at risk—you’re going to kill a lot of Syrians. So all of a sudden this intervention that people talk about so glibly becomes an American and NATO involvement where you take a lot of civilians.”

Putin doesn't seem to worry himself too much about this.

All we get from the Trumptards is, "Blame Obama."