Typically, Saudi Arabia. It never ceases to amaze that Western countries allow Saudi Arabia to pour billions of dollars into their countries to promote Wahhabism, which provides the ideological underpinnings of anti-Western islamist terrorism, yet these Western countries do not require as a matter of reciprocity that Saudi Arabia provide even the most minimal toleration of Christianity or any other competing religion (including "secular humanism" which the Western elites subscribe to).
Add to that the fact that Islam is a political ideology as well and you see where this is headed.