"The Grand Mufti made his assertion in response to a question posed by a delegation from Kuwait, regarding the position of a Kuwaiti parliament member who recently called for the "removal" of churches (he later "clarified" by saying he merely meant that no churches should be built in Kuwait). The Kuwaiti delegation wanted to confirm Sharia's position on churches.
Accordingly, the Grand Mufti "stressed that Kuwait was a part of the Arabian Peninsula, and therefore it is necessary to destroy all churches in it."
As with many grand muftis before him, the Sheikh based his proclamation on the famous tradition, or hadith, wherein the prophet of Islam declared on his deathbed that "There are not to be two religions in the [Arabian] Peninsula," which has always been interpreted to mean that only Islam can be practiced in the region.
While the facts of this account speak for themselves, consider further:
Sheikh Abdul Aziz bin Abdullah is not just some random Muslim hating on churches. He is the Grand Mufti of the nation that brought Islam to the world. Moreover, he is the President of the Supreme Council of Ulema [Islamic scholars] and Chairman of the Standing Committee for Scientific Research and Issuing of Fatwas. Accordingly, when it comes to what Islam teaches, his words are immensely authoritative."