The 1999 United Nations International Convention for the Suppression of the Financing of Terrorism (Terrorist Financing Convention) is a multilateral treaty open to the ratification of all states designed to criminalize acts thos who finance terrorist activities and to promote police and judicial cooperation to prevent, investigate and punish financing those acts.
Article 2.1 defines the crime of terrorist financing as the offence committed by "any person" who "by any means, directly or indirectly, unlawfully and wilfully, provides or collects funds with the intention that they should be used or in the knowledge that they are to be used, in full or in part, in order to carry out" an act "intended to cause death or serious bodily injury to a civilian, or to any other person not taking an active part in the hostilities in a situation of armed conflict, when the purpose of such act, by its nature or context, is to intimidate a population, or to compel a government or an international organization to do or to abstain from doing any act."[1]
State parties to this treaty commit themselves also to freezing and seize of funds intended to be used for terrorist activities, to share the forfeited funds. Moreover, States commit themselves not to used Bank secrecy as a justification for refusing to cooperate.
For the text of the convention see: 1999 International Convention for the Suppression of the Financing of Terrorism (Terrorist Financing Convention)