ISIS is in two countries, the US has invaded how many countries?
ISIS is a threat to US and its oil policy, the US is not a threat to US oil policy.
There's the difference, it's all how you want to look.
Yeah, and we make them dig their own graves before we saw off their heads all of the time.
Oh!!! That's ISIS.
*sorry*
And why do you think they do this?
The US has an armed force that spends more than then next NINE COUNTRIES put together. They can't win on the battlefield. So they don't even try.
They win by getting the hearts and minds, not in a positive way, of their enemy. And it works. They can kill one person and scare the hell out of the west. We're over there bombing the hell out of them, and so what?
It's tactics. They use what they have, and they use what works.
If the US wasn't there killing people, they wouldn't need such tactics.