The united nations was formed to prevent and defend the weak. If the world does not intervene. Then the whole world is in peril. Forget the trading and profitable world relationships we have now. The liberal hand wringers have had theirs and got their way with iraq and afghanistan. Tell the world how talks and sanctions are to prevent mass slaughter by this evil
Sadly the UN is built to hold the interest of the strong ones, hence only a couple of countries has the power to veto and control anything that is decided in the UN entities that has the power of action like the security council, as for the general assembly other countries can suggest or vote all they want not much things are usually done.
This is quite natural. Do you think the muslims are care about what's happening in Ukraine? No, they don't. That would change if someone would start killing muslims. Same thing applies here.
The situation wouldn't change really (example Chechen war) , they are following the situation, but they cannot take positions and even if they take position it wouldn't change anything, not to mention that Arab countries right now are surrounded with Issues like in Mali, Libya, Syria, Iraq....
Vietnam is the best example, for displaying the limited usefulness of air strikes. If you want to win a war against something like ISIS eventually you have to go there, look into their eyes and kill them all. That's the only remedy.
Ah don't remind me of Vietnam, I've read some books recently and some articles about the US war crimes there....and I'm still shocked of how humans can do such things to other fellow humans .... but if you go back to your point here, Vietnam has proven that ground intervention fails also,trying to kill everyone will just makes matters even worse and will only bring more chaos to the chaos that is already in place, ISIS should be pushed for the time being with military actions to save people from death, but at the same time and as I pointed before, they should have a long term plan that would solve the political/religious/tribal issues of the country, strengthens the country institutions, and military power