by the United Nations, United Nations Security Council Resolution 1928
“ Determining that proliferation of nuclear, chemical and biological weapons, as well as their means of delivery, continue to constitute a threat to international peace and security,Acting under Article 41 of Chapter VII of the Charter of the United Nations,1. Decides to extend until 12 June 2011 the mandate of the Panel of Experts, as specified in paragraph 26 of resolution 1874 (2009) , and requests the Secretary-General to take the necessary administrative measures to this effect ”
