I recently heard an open source analyst comment that the Syrian insurgents were receiving financial support, up to US$600m, from rich families and others in the Gulf who move the cash to Kuwait ostensibly to donate to Kuwaiti charities. Kuwait and the Gulf states have legislation on countering terrorism finance, but being charitable donations prefer to "look the other way". Plus a Salafist faction is present in the Kuwaiti parliament, who would not support an official response.

A partial support comes in this Kuwaiti newspaper report:http://alhayat.com/Details/568664 The Google translation is not perfect.