Foreign relations of Australia are influenced by its position as a leading trading nation and as a significant donor of humanitarian aid. Australia's foreign policy is guided by a commitment to multilateralism and regionalism, as well as to build strong bilateral relations with its allies. Key concerns include free trade, terrorism, refugees, economic co-operation with Asia and stability in the Indo-Pacific. Australia is active in the United Nations and the Commonwealth of Nations. Given its history of starting and supporting important regional and global initiatives, it has been described as a regional middle power par excellence.
It maintains significant ties with ASEAN and has become steadfastly allied with New Zealand, through long-standing ties dating back to the 1800s. The country also has a longstanding alliance with the United States of America. Over recent decades Australia has sought to strengthen its relationship with Asian countries, with this becoming the focus of the country's network of diplomatic missions. In 2021, Australia signed a significant security partnership with the United Kingdom and the United States of America (AUKUS) aimed at countering the growing threat of China in the region.
History
Before the Second World War, Australia saw its economic and military security assured by being a loyal dominion of the British Empire and generally sought to align its diplomatic policies with those of the British Government. Although Australia, like other British Dominions, was a signatory to the Treaty of Versailles and a member of the League of Nations, the British Government handled most of Australia's diplomatic exchanges outside the Empire. The approach of the Second World War saw the first steps by Australia in establishing its own diplomatic network, particularly with economically and politically important countries of the Pacific Rim. The first accredited diplomat sent to a foreign country was Richard Casey, appointed as the first Minister to the United States in January 1940. This was followed shortly after by the arrival of the first Australian high commissioner to Canada, and by appointments of Ministers to Japan in 1940 and China in 1941. With the entry of Japan into the war in December 1941 and the consequent heightened vulnerability of Australia to attack, a critical decision was made by the Curtin Government to more closely seek the military protection of the United States. Since that time, United States has been the most important security ally. The close security relationship with the United States was formalized in 1951 by the Australia, New Zealand, United States Security (ANZUS) Treaty which remains the cornerstone of Australian security arrangements.
During and after the Second World War, and in parallel with the evolution of the British Empire to the Commonwealth of Nations, Australia progressively took responsibility for fully managing its foreign relations with other states. Australia concluded an agreement in 1944 with New Zealand dealing with the security, welfare, and advancement of the people of the dependent territories of the Pacific (the ANZAC pact). Australia was one of the founders of the United Nations (1945) and the South Pacific Commission (1947), and in 1950, it proposed the Colombo Plan to assist developing countries in Asia. After the war, Australia played a role in the Far Eastern Commission in Japan and supported Indonesian independence during that country's revolt against the Dutch (1945–49).
As the Cold War deepened, Australia aligned itself fully with the Western Powers. In addition to contributing to UN forces in the Korean War – it was the first country to announce it would do so after the United States – Australia sent troops to assist in putting down the communist revolt in Malaya in 1948–60 and later to combat the Indonesian-supported invasion of Sarawak in 1963–65. Australia sent troops to repel communism and assist South Vietnamese and American forces in the Vietnam War, in a move that stirred up antiwar activism at home. Australia has been active in the Five Eyes intelligence alliance, and in the Australia – New Zealand – United Kingdom agreement and the Five Power Defence Arrangement—successive arrangements with Britain and New Zealand to ensure the security of Singapore and Malaysia.