Even though I don't agree with a lot of the US foreign policy, I find it hard to blame Saudiarabia's government for the works of al Qaida or IS. In all honesty al Qaida is more of a product of US foreign policies in the 1980's and 1990's, as it is a result of Saudiarabian inability to prevent islam extremism.
As long as the US and Saudiarabia has common interests, they will be allies (or partners in crime?). Right now that common interest is Iran and Syria (and to complicate things, you can add Iraq to that mess).
Of course Saudiarabia is a ruthless sort of dictatorship (just as China). But in all honesty it's not possible to compare Saudiarabian action in the middle east with Russian action against Ukraine. There simply aren't any similarities at all. The major difference is that Saudiarabia comply with international laws and respect sovereign countries. They work within the rules set up by the international community. Russia on the other hand try to bypass those rules, and sometimes even change them. For instance one might argue that the Russian foreign policy says that international rules and laws do not comply to countries from the former Soviet union (unless those countries are members of NATO and/or members of EU). That doctrine is far more serious and dangerous to the world than a ruthless dictatorship complying with international rules.







