Tashfeen Malik, who killed 14 and injured 17 in USA recently, pledged allegiance to ISIS. The national security interests of America depends on fighting Radical Islam, which is the state sponsored religious ideology of Saudi Arabia. In order to eliminate ISIS, the power base and support must be targeted, and that is the Kingdom of Saudi Arabia, and the Saudi Royal family.
In an October 14, 2014 interview of Saudi Royal Prince Alwaleed Bin Talal, with Christane Amanpour of CNN, he stated:
“But you have a problem with Islamism, which is political Islam. And we need to neutralize that.”
Political Islam is the term he used to describe Radical Islam, which is a political ideology, and not a religion.