Financial support from Saudi is just one aspect. The Kingdom morally and spiritually support the jihad against us. The biggest recruiting ground for soldiers and martyrs of the Jihad is Saudi. They are feted by other Saudis.
A quarter of the detainees at Guantanamo were Saudis (about 160 of them).
Saudis released from Guantanamo
After pressure from the Saudis, nearly all have now been released. What fate is in store for these enemy combatants picked up in Afghanistan, when they return to Saudi. They are treated as heroes and VIPs.
Saudis prisoners become VIPs
So far, the two ongoing wars have cost the US $196.4bn. It has cost the UK �7bn so far (�80million a month). That is very costly on our side, and though the jihadist will not be spending that much, they will have spent many millions or even billions on their arms. Where is that money coming from? Starve them of money, and their ability to fight against us is diminished.