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Alliance of Small Island States (AOSIS) is an intergovernmental organization of low-lying coastal and small island countries. Established in 1990, the main purpose of the alliance is to consolidate the voices of Small Island Developing States (SIDS) to address global warming. AOSIS has been very active from its inception, putting forward the first draft text in the Kyoto Protocol negotiations as early as 1994. At the 2013 Warsaw climate change conference, AOSIS also pushed for the establishment of an international mechanism on loss and damages stressed by the wreckage of Supertyphoon Haiyan. As the existence of many AOSIS states are put at risk by climate change AOSIS has threatened lawsuits. The results of a recent review of the literature  show that potential liability for climate change-related losses for the Alliance of Small Island States is over $570 trillion.
Many of the member states were present at the December 2009 United Nations Climate Change Conference (COP15). Democracy Now! reported that members from the island state of Tuvalu interrupted a session of the 2009 United Nations Climate Change Conference on 10 December 2009 to demand that global temperature rise be limited to 1.5 °C instead of the proposed 2 °C.
AOSIS has a membership of 44 states, of which 39 are members of the United Nations and five are observers from all around the world. The alliance represents 28% of the developing countries, and 20% of the UN's total membership.
AOSIS member states
The member states are:
- Robert Van Lierop (Vanuatu) 1991-1994
- Annette des Iles (Trinidad and Tobago) 1994-1997
- Tuiloma Neroni Slade (Samoa) 1997-2002
- Jagdish Koonjul (Mauritius) 2002-2005
- Enele Sopoaga (acting) (Tuvalu) 2005-2006
- Julian R. Hunte (Saint Lucia) 2006
- Angus Friday (Grenada) 2006-2009
- Dessima Williams (Grenada) 2009-2011
- Marlene Moses (Nauru) 2012–2014
- Ahmed Sareer (Maldives) 2015–2017
- Ali Naseer Mohamed (Maldives) 2017–2018
- Lois Michele Young (Belize) 2019–present
- Africa, the Caribbean and the Pacific (ACP)
- Barbados Programme of Action (BPOA)
- Climate change mitigation
- Islands First
- Least Developed Countries (LDC)
- World Ocean Conference
- Politics of global warming
- "For Immediate Release: Small Islands Call For Urgency in Warsaw in Wake of Deadly Typhoon". AOSIS. 11 November 2013. Archived from the original on 26 October 2014. Retrieved 12 December 2013.
- Heidari Negin, Pearce Joshua M (2016). "A Review of Greenhouse Gas Emission Liabilities as the Value of Renewable Energy for Mitigating Lawsuits for Climate Change Related Damages". Renewable and Sustainable Energy Reviews. 55: 899–908. doi:10.1016/j.rser.2015.11.025.
- "Citing Its Survival, Pacific Island of Tuvalu Interrupts Copenhagen Summit to Call for Binding Climate Commitments". Democracy Now!.
- United Nations Framework Convention on Climate Change (UNFCCC) (2011). "Conference of the Parties – Sixteenth Session: Decision 1/CP.16: The Cancun Agreements: Outcome of the work of the Ad Hoc Working Group on Long-term Cooperative Action under the Convention (English): Paragraph 4" (PDF). UNFCCC Secretariat: Bonn, Germany: UNFCCC: 3. Cite journal requires
|journal=(help) "(...) deep cuts in global greenhouse gas emissions are required according to science, and as documented in the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, with a view to reducing global greenhouse gas emissions so as to hold the increase in global average temperature below 2 °C above preindustrial levels"
- "Member states". Archived from the original on 2012-04-01. Retrieved 2019-08-16.
- "About AOSIS". AOSIS - Alliance of Small Island States.