All,
I'm going to make an argument for the events that transpired.
1) If you accept, as is widely speculated, that the chemical attacks were a "False Flag", then Trump most probably would accept that as well. Let me also mention that Sarin gas will kill almost immediately due to convulsions. Video evidence contradicts this fact.
2) If Trump accepts the events were a FF, then he has 3 options:
A) Fight the Deep State, prove they were FF. He will also be accused of helping Russia, since he would be defending Assad in this position.
B) Do nothing, appear weak.
C) Send 50 missile to an airport, that was pre-communicated to Russia, to satisfy the Deep State, win their temporary support. Sure, he might ruffle his base, but....
Chances are, If the attacks are FF, he has intel on the perpetrators in the Deep State that organized the FF. Imagine the leverage he has over them now.
Trump wasn't going to prevent this FF, but knowing his IQ, I bet he is using this as an opportunity to gain an advantage.