Exactly my point. But just because we find ourselves fighting against an unconventional foe does not make their targets legitimate. Killing the Russian ambassador does absolutely nothing for the cause of ISIS or Al Qaida. Erdogan is playing both ends against the middle. We'll see if his regime can last to see the endgame whatever that may be.
To be clear, I'm not arguing the intelligence of this move. I think it was stupid. I'm only arguing the morality of it. You're probably, right. Erdogan is probably the big winner here. He gains solidarity with the Russians. I'll be interested to see if he tries to annex any of Syria. If Assad weakens, he may incur into Syrian territory under the guise of his Kurdish problem. If he gets support from the Russians, it will be hard to stop him.