When the Necessary Is Impossible, by Tom Friedman – The New York Times

“ISIS is a rocket whose guidance system is a direct descendant of the puritanical, anti-Shiite, anti-pluralistic Saudi Wahhabi ideology, and its fuel system is a direct reaction to Shiite Iran’s aggressive push to keep Iraqi Sunnis permanently weak. As long as Iran and Saudi Arabia are going at it, there will always be another ISIS. Which is why the “peace process” the Middle East needs most today is between Saudi Arabia and Iran.”

Source: When the Necessary Is Impossible – The New York Times