The Cook Islands maintains diplomatic relations with various countries and is a member of multilateral organisations. While the country is in free association with New Zealand, which can act on the Cook Islands' "delegated authority [...] to assist the Cooks Islands" in foreign affairs, the Cook Islands nevertheless enters into treaty obligations and otherwise "interacts with the international community as a sovereign and independent state."
In the 1980s the Cook Islands became a member of several United Nations specialized agencies: the World Health Organization in 1984, the Food and Agriculture Organization and UNESCO in 1985, and the International Civil Aviation Organization in 1986. The Repertory of Practice of United Nations Organs records that in 1988 New Zealand declared "that its future participation in international agreements would no longer extend to the Cook Islands..." In 1991 the Cook Islands became a full member of the United Nations Conference on Environment and Development (UNCED) Preparatory Committee and the Intergovernmental Negotiating Committee for a Framework Convention on Climate Change (INC), which the Repertory of Practice describes as "further evidence that the international community had accepted the Cook Islands as a “State” under international law." The United Nations Secretariat therefore "recognized the full treaty-making capacity of the Cook Islands" in 1992 and the Secretary-General, in his capacity as the depository of multilateral treaties, decided that the Cook Islands could participate in treaties that were open to "all states".
As of August 2015, the Cook Islands has diplomatic relations with 44 states. It has also non-resident mission accredited to the European Union (EU) in Avarua. Todd McClay served as Cook Islands Ambassador to the EU from 2002 to 2008. McClay retired from that position and moved back to New Zealand to successfully contest the Rotorua seat in the 2008 New Zealand General Election. James Gosselin, the Cook Islands Secretary of Foreign Affairs, currently serves as the Cook Islands non-resident representative to the European Union (resident in Avarua).
In 2000 the Cook Islands government signed the Cotonou Partnership Agreement between the European Union and African, Caribbean and Pacific Group of States (ACP).
Upon signature of this agreement the Cook Islands Government established a representation to the EU in Brussels. In 2002 this representation was upgraded to a full diplomatic mission with accreditation to the European Union. The establishment of this mission marked an important development in Cook Islands international relations representing the first full diplomatic mission established by the Cook Islands outside of Pacific countries.
The Cook Islands Mission to the European Communities interacts with European Union institutions, the ACP Group of States and other bilateral country representations and embassies.
Diplomatic relations
The following countries have established formal diplomatic relations with the Cook Islands.
Oceania
Australia 1994
Fiji 1998
Kiribati 3 September 2013
Marshall Islands 3 September 2013
Micronesia 24 September 2014
Nauru 1994
New Zealand 1993
Niue 2013
Palau 3 September 2013
Papua New Guinea 1995
Samoa 2013
Solomon Islands 2013
Tonga 18 November 2014
Tuvalu 2013
Vanuatu 2013
Europe
Belgium 6 April 2005
Bosnia and Herzegovina 10 April 1996
Czech Republic 12 May 2008
European Union 2001
France 2000
Germany 11 September 2001
Holy See 29 April 1999
Italy 21 February 2002
Kosovo 18 May 2015
Netherlands 16 August 2011
Norway 1998
Portugal 12 August 1995
Spain 29 January 1998
Switzerland 7 March 2011
Turkey 20 October 2008
Asia
China 25 July 1997
India 1998
Iran 1 March 1996
Israel 2008
Japan 16 June 2011
Malaysia 2 May 1992
Philippines 12 December 2011
Singapore 6 August 2012
South Korea 22 February 2013
Thailand April 2005
Timor-Leste 17 August 2002
Americas
Brazil 21 August 2015
Cuba 2 September 2002
Jamaica 14 May 2003
Africa
South Africa 9 February 1996
Consular relations
The following countries have established consular relations with the Cook Islands only.
In November 2011, the Cook Islands were one of the eight founding members of Polynesian Leaders Group, a regional grouping intended to cooperate on a variety of issues including culture and language, education, responses to climate change, and trade and investment.
The Cook Islands participate in the International Maritime Organisation, the United Nations regulatory body for the shipping trade. Their position against reducing carbon emissions from international shipping has drawn criticism from other Pacific island nations who are similarly vulnerable to rising sea levels.
Participation in international treaties and conventions
Party to the following treaties and conventions: Biodiversity Convention, Cotonou Agreement, Geneva Conventions, POPs Project, United Nations Convention to Combat Desertification, UNCLOS, UNFCCC and its Kyoto protocol, Convention on the Recognition and Enforcement of Foreign Arbitral Awards, Comprehensive Nuclear-Test-Ban Treaty, International Code of Conduct against Ballistic Missile Proliferation, Biological Weapons Convention, Convention of the International Mobile Satellite Organization