Be careful who you piss off. Unless, of course, you are a brainless jihadi who doesn’t give a shit about anything.
OK. You can piss the Americans off, and they will react by randomly bombing a few inconsequential buildings, killing more civilians than jihadis, but without any real plan to deal with you properly which would not be in their best interests or aims anyway.
You can piss the Europeans off, and they will side with the Americans. They will Huff ‘n’ Puff a bit until the news moves on, but ultimately achieve the same results.
But if you start messing with the Russians and now the Chinese (hot news ), you have started on the slippery slope to oblivion, where you will get “wasted …in the outhouse” (Putin). They won’t mess about like the West. They have no other agenda in the Middle East.
I think ISIS is done for …and the US will have to look to start another war scenario somewhere else so it can sell its armaments to prop up its shaky economy.