Here's Vladimir Putin talking about ISIS at the "Valdai International Discussion Club" in 2014. Say what you will about him and his politics, but I think this is pretty spot on (Ignore the channel itself. I'm not some tinfoil hat-wearing loony, I'm just linking a video that I found).
What you always need to remember is that in global politics you cannot consider any side to be "good" or "evil". The USA acts according to it's own interests just as Russia does, and in their eyes such interests always go before the needs of other nations.
It is also, and has always been, about money, resources and power. If you think the leaders of ISIS are just some crazy religious fanatics then you're wrong. They control the region with the help of faith (which has always been very deeply embedded into the culture in the Middle East) and violence, but in reality the whole thing is a business.
Compare it to drug cartels. The leaders of such criminal activity don't do it for their love of cocaine, but because it makes them loads of money.
The reason why news don't often present it this way, is perhaps the fact that those kinda stories tend not to sell as well as shock stories, and the fact that world leaders maybe do not want people to be aware of such things happening to the extent that they are.
It's like arms trade: a massive, very real worldwide business, but nearly invisible to the general populace. As a person living in a place where everything is just fine and dandy, it's sometimes hard to imagine that such a thing could even be happening in the first place.
And by the way, anybody wanna guess who the world's largest arms exporter is?
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