I think after the chemical weapons proliferation to Salisbury & Assad's continued use of chemical bombs that the West would have to show their disapproval.
Where Trump is a well run Putin asset with a back-channel link from a Trump Tower server linked to the Kremlin controlled Alpha bank, I'm sure it was all agreed beforehand, which is why Syria had allegedly evacuated all personnel from the targets well before they were attacked.
The end result is that the West have shown they will do an ineffective something. Corbyn was played & has played the fool again. Putin was able to show his belligerence and bolster his importance to his economically suffering domestic audience & along with Assad was able to claim that their joint military might 'shot' them all down at the cost of all the 'weak' buildings at the targets collapsing as a result of the 'mid-air interceptions'.
So all sides are happy with this '
dishonourable' draw. The West/Trump have shown he will do something that the weak Obama/Dems wouldn't & will keep reminding voters of this as we approach the November 2018 mid-term elections & has also reminded the world what has been known since WWI that airborne bombs will always get through, Putin is happy as he was able to strut his importance on the world stage again, Assad had a few buildings destroyed & will continue with his vile chemical attacks & other crimes against humanity as the worst that could happen to him is a few more life sentences at The Hague & life goes on for everybody else.
The technical term for the whole charade is called grandstanding.