“I do not know what would have happened if, three years ago Monday, David Cameron, the British Prime Minister, had not foolishly held and lost a vote on intervention in Syria in the House of Commons. Perhaps if he had paid more attention, seemed more interested and told his colleagues to come home from vacation, he might have succeeded. Perhaps an intervention would have followed. Perhaps it would have helped end the conflict — or perhaps it would have failed.

...

Maybe a US-British-French intervention would have ended in disaster. If so, we would today be mourning the consequences. But sometimes it’s important to mourn the consequences of non-intervention too. Three years on, we do know, after all, exactly what non-intervention has produced.

...

“Physical, human and political damage on an unprecedented scale; ongoing security threats; the renewed stirrings of fascism. Maybe those are better than the alternative that seemed so unpalatable to the British Parliament and the American President. But it’s hardly an outstanding success.”

Read: The Disastrous Non-Intervention in Syria