This book is specifically designed as a companion volume to Australia's Defence: Towards a New Era? The Australia-United States Alliance has been critical to Australian foreign and defence policy since the ANZUS Treaty was signed in 1951. For 63 years it has been an enduring feature of Australian defence planning, yet the contemporary alliance is, arguably, in one of the more important phases of reinterpretation in its long history. While the Alliance by its very nature is a bi-lateral relationship, this book will therefore specifically focus on Australian perspectives and policy choices, while providing context on the role of the United States in the Asia-Pacific and its position as a global power.