The Cold War had a significant impact on the foreign policies of newly independent Pacific Island states. These nations found themselves in a strategic geographical position during a time of intense rivalry between the United States and the Soviet Union. As a result, many of these states aligned with the Western bloc, influenced by economic and military aid, as well as diplomatic support from countries like Australia and the United States. This alignment often shaped their international relations and domestic policies, as they navigated the complexities of Cold War politics while trying to establish their identities on the world stage.

The desire for independence in the Pacific Island states was driven by a combination of factors. Firstly, there was a growing sentiment of nationalism and a desire to govern according to indigenous values and traditions, rather than under foreign rule. Secondly, the weakening of colonial powers post-World War II diminished their ability to maintain control, making independence movements more feasible. Thirdly, the global trend towards decolonisation, influenced by the United Nations and other international bodies, provided both a model and support for these movements. Lastly, internal political movements and leaders played crucial roles in mobilising support for independence.

Establishing stable governance in the newly independent Pacific Island states posed several challenges. Firstly, there was the task of transitioning from colonial administration to self-governance, which required the development of new political institutions and legal frameworks. Secondly, these nations often had limited experience in self-administration, leading to initial issues of inefficiency and corruption. Thirdly, the need to balance traditional governance structures with modern democratic practices was complex and often led to internal political tensions. Lastly, the small size and limited resources of many of these states made it difficult to sustain effective and stable government institutions.

Post-independence, Australia and New Zealand played crucial roles in supporting Pacific Island states. This support manifested in various forms, including economic aid, development assistance, and diplomatic backing. Australia and New Zealand helped build institutional capacities, improve infrastructure, and foster economic development in these newly independent states. They also provided critical support in areas like health and education. Furthermore, as regional powers, they played a key role in facilitating these states' integration into regional and international forums, helping them establish their presence and voice in the global community.

The United Nations played a pivotal role in the independence movements of Pacific Island states by advocating for the principle of self-determination, as enshrined in its charter. The UN provided a global platform where issues of colonial rule and the right to independence were debated and highlighted. This international attention and pressure led to a moral and political impetus for decolonisation. Additionally, the UN's technical and advisory support, particularly through its Trust and Non-Self-Governing Territories system, helped in preparing these territories for self-governance and eventual independence.