This document is by no means a complete treatment of the very complex alliance relationship. Rather, it is an attempt to identify the main costs, benefits and challenges and to give readers a perspective. As a result, we divided the paper into two main sections, benefits and costs, each seeking to highlight and maximize the case it supported. We hope to present to readers a summary of the alliance and the most important after fifty years. It should not be considered that the views expressed here to argue necessarily constitute the detailed views of the authors. In response to this strategic dilemma, Australia has established a model of relationships with a great and powerful friend. It struggled to resist this dependence when it had the opportunity in the early 1950s to negotiate a treaty that would encourage the United States to supplement or replace Britain as allies, especially since the United States had been so capable and useful as an ally over Britain during World War II, when Australia was directly threatened. Australia was represented in the DEINS negotiations by Secretary of State Percy Spender, who took advantage of the U.S. desire to reach a non-punishable agreement with Japan to get the Americans to agree, albeit reluctantly, to conclude a security agreement with Australia and New Zealand to ensure their security against a revitalized Japan. (10) With the fall of mainland China to communism and the outbreak of the Korean War, the United States was striving for a lenient agreement with Japan to use Japan as a bulwark against communism. The Australian atmosphere was against leniency, but donors took advantage of the carrot of a peace treaty, underscoring the link between Australia`s regional security problems and the role the United States and Britain expect in defending the Middle East to secure U.S.

membership in an alliance. (11) The Security Treaty of Australia, New Zealand and the United States of America was an agreement to protect the security of the Pacific. Although the agreement has not been formally repealed, the United States and New Zealand no longer maintain security relations between their countries.