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Asked about the Saudi-funded spread of Wahhabism, the austere faith that is dominant in the kingdom and that some have accused of being a source of global terrorism, Mohammed said that investments in mosques and madrassas overseas were rooted in the Cold War, when allies asked Saudi Arabia to use its resources to prevent inroads in Muslim countries by the Soviet Union.
Successive Saudi governments lost track of the effort, he said, and now “we have to get it all back.” Funding now comes largely from Saudi-based “foundations,” he said, rather than from the government.
-- WaPo's interview with MbS.