Arctic cooperation and politics are partially coordinated via the Arctic Council, composed of the eight Arctic nations: the United States, Canada, Iceland, Norway, Sweden, Finland, Russia, and Denmark with Greenland and the Faroe Islands. The dominant governmental power in Arctic policy resides within the executive offices, legislative bodies, and implementing agencies of the eight Arctic nations, and to a lesser extent other nations, such as United Kingdom, Germany, European Union and China. NGOs and academia play a large part in Arctic policy. Also important are intergovernmental bodies such as the United Nations (especially as relates to the Law of the Sea Treaty) and NATO. Though Arctic policy priorities differ, every Arctic nation is concerned about sovereignty and defense, resource development, shipping routes, and environmental protection. Though several boundary and resource disputes in the Arctic remain unsolved, there is remarkable conformity of stated policy directives among Arctic nations and a broad consensus toward peace and cooperation in the region. Obstacles that remain include United States non-ratification of the UNCLOS and the harmonizing of all UNCLOS territorial claims (most notably extended continental shelf claims along the Lomonosov Ridge); the dispute over the Northwest Passage; and securing agreements on regulations regarding shipping, tourism, and resource development in Arctic waters. The Arctic Council membership includes the eight Arctic nations and organizations representing six indigenous populations. It operates on consensus basis, mostly dealing with environmental treaties and not addressing boundary or resource disputes. (Although the Arctic Search and Rescue Agreement was signed in May 2011, the council's first binding document). A more robust Arctic Council with decision-making power on pan-Arctic resource and other issues has been proposed. Circum-Arctic cooperative organizations Arctic Council Members include the eight Arctic Nations: Canada, Denmark, Finland, Iceland, Norway, Russia, Sweden and United States. Permanent participants are these six indigenous groups: Inuit Circumpolar Council (ICC) The ICC is a multinational NGO representing the 160,000 Inuit living in the United States, Canada, Greenland, and Russia. Gwich’in Council International (GCI) Aleut International Association (AIA) Saami Council Arctic Athabascan Council (AAC) Russian Association of Indigenous Peoples of the North (RAIPON) Arctic Council working groups: Arctic Monitoring & Assessment Programme (AMAP) Conservation of Arctic Flora & Fauna (CAFF) Emergency Prevention, Preparedness & Response (EPPR) Protection of the Arctic Marine Environment (PAME) Sustainable Development Working Group (SDWG) Arctic Contaminants Action Program (ACAP) In Tromsø, Norway on April 29, 2009, Arctic Council ministers approved a task force