by the United Nations, United Nations Security Council Resolution 1566
“ Calls upon States to cooperate fully in the fight against terrorism, especially with those States where or against whose citizens terrorist acts are committed, in accordance with their obligations under international law, in order to find, deny safe haven and bring to justice, on the basis of the principle to extradite or prosecute, any person who supports, facilitates, participates or attempts to participate in the financing, planning, preparation or commission of terrorist acts or provides safe havens ”
