You may be correct Gromit that money from Saudi used to fund Islamic terrorists is still flowing but with respect neither DTCwordfan, you nor I know that: what is known is that Saudi continues to export Wahhabi and Salafi doctrine all over the Muslim world, which missionary zeal has already resulted in such groups as the Taliban, al-Qaeda, Boko Haram, al-Shabaab, al-Nusra, ISIS, Khorasan...
"The soaring oil price created by the 1973 embargo – when Arab petroleum producers cut off supplies to the US to protest against the Americans’ military support for Israel – gave the kingdom all the petrodollars it needed to export its idiosyncratic form of Islam. The old military jihad to spread the faith was now replaced by a cultural offensive. The Saudi-based Muslim World League opened offices in every region inhabited by Muslims, and the Saudi ministry of religion printed and distributed Wahhabi translations of the Quran, Wahhabi doctrinal texts and the writings of modern thinkers whom the Saudis found congenial, such as Sayyids Abul-A’la Maududi and Qutb, to Muslim communities throughout the Middle East, Africa, Indonesia, the United States and Europe. In all these places, they funded the building of Saudi-style mosques with Wahhabi preachers and established madrasas that provided free education for the poor, with, of course, a Wahhabi curriculum. At the same time, young men from the poorer Muslim countries, such as Egypt and Pakistan, who had felt compelled to find work in the Gulf to support their families, associated their relative affluence with Wahhabism and brought this faith back home with them, living in new neighbourhoods with Saudi mosques and shopping malls that segregated the sexes. The Saudis demanded religious conformity in return for their munificence, so Wahhabi rejection of all other forms of Islam as well as other faiths would reach as deeply into Bradford, England, and Buffalo, New York, as into Pakistan, Jordan or Syria: everywhere gravely undermining Islam’s traditional pluralism."
http://www.newstatesman.com/world-affairs/2014/11/wahhabism-isis-how-saudi-arabia-exported-main-source-global-terrorism
.... all done under the obliging, averted eyes of the US.
Rather late now, but unless that 'great ally' (Saudi et al) completely halt this missionary practice, then trying to eradicate Islamic extremism is doomed to failure.