Visa, Mastercard and PayPal all enable donations to be made to US-registered groups funding illegal Israeli settlements in the West Bank in defiance of international law.
It appears at least one of the major credit cards also enables donations to an extremist Jewish group that has placed a bounty on the lives of Palestinians.
All three have in the last week ceased enabling donations to WikiLeaks. Neither Mastercard nor Visa have explained the basis for their decision to do so. PayPal has backed away from its initial claim that the US State Department told PayPal WikiLeaks had broken the law after the claim was discredited. This is the third occasion on which PayPal has suspended payment services for WikiLeaks.