For those of you who don't know, U.S. wants to build an oil pipeline from Saudi Arabia and the Gulf states through Iraq and Syria into Europe. (Hence supporting ISIL and Al Nusra to get rid of Assad who is propped up by the Russians) Russia is the only one who currently has a pipeline into Europe, so Russia sees this as an existential threat to its national security because sanctions over Ukraine tanked the Ruble and oil is the only thing keeping it up. If that U.S.-Saudi pipeline is built, the Russian economy will completely tank.

Saudi Arabia has exported Wahhabi Islam for decades in the middle east as a method of pushing its interests and it's largely been successful and its been largely funded by Americans the entire time-- in some cases explicitly instead of unintentionally. The 9/11 attack was a huge boon for Saudi Arabia because the Americans couldn't resist playing world police and knocked over 2 countries--(Iraq being the larger problem for the Saudis). The only 'rival' left for Saudi Arabia in the region is Iran.

So now Iran and Saudi Arabia fight each other with terrorism all over the middle east. The U.S. and Russia play cold war reinactments and everyone gets bombed, America gets bombed, Europe gets bombed then plays the bleeding heart card on refugees just to get low unskilled labor en-masse to grow their economy and then gets bombed again, Russia gets bombed, Syria gets really bombed, Turkey bombs itself and Syria to kill Kurds, including those Kurds that attack ISIL because they buy oil on the cheap straight from ISIL. Saudi Arabia and Israel want the U.S. to bomb Iran for different reasons. (Israel's being that Iran's terrorists live on their borders and harass Israelis// Saudi Arabia wants its last rival in the region gone.)

IMO no one should be involved in the burning trash fire that is the middle east unless they have borders in the region-- but here we are, wasting trillions of dollars we could have spent in our own countries.