3 February, 2026
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Department of Defence Secretary Greg Moriarty is set to replace Kevin Rudd as Australia’s ambassador to the United States, as announced by the Australian government. Prime Minister Anthony Albanese confirmed the appointment, highlighting Moriarty’s extensive experience and significant contributions to Australia’s international policy.

“The Albanese Government will recommend to the Governor-General that Mr Greg Moriarty AO be Australia’s next Ambassador to the United States of America,” stated Prime Minister Anthony Albanese. “Mr Moriarty is uniquely experienced to take forward the Australia-US alliance,” he added, underscoring Moriarty’s credentials and his pivotal role in the Australian Public Service.

Greg Moriarty’s Extensive Diplomatic Experience

Greg Moriarty brings a wealth of experience to his new role, having previously served as Australia’s ambassador to Indonesia from 2010 to 2014 and to Iran from 2005 to 2008. His career in the government also includes senior positions in the Office of the Prime Minister, where he served as International and National Security Adviser and later as Chief of Staff to then Prime Minister Malcolm Turnbull.

In 2015, Moriarty was appointed as Australia’s inaugural Counter Terrorism Coordinator in the Department of the Prime Minister and Cabinet. During his tenure at the Department of Defence, Moriarty oversaw a significant increase in the Defence budget and played a key role in the development and implementation of AUKUS, a trilateral security pact with the United States and the United Kingdom.

Kevin Rudd’s Tenure and Departure

Kevin Rudd’s departure from the ambassadorial role comes a year earlier than anticipated. His tenure was marked by tensions, notably an awkward encounter with former US President Donald Trump. The incident stemmed from historic social media posts in which Rudd criticized Trump as a “traitor to the West,” leading to a strained relationship.

Despite these challenges, Rudd’s contributions to the diplomatic landscape were acknowledged by Prime Minister Albanese. “We again thank the Hon Dr Kevin Rudd AC for his service,” Albanese remarked. Rudd will remain in the United States to assume a new role as president and chief executive of the Asia Society think tank, furthering his engagement with international affairs.

Implications for Australia-US Relations

The appointment of Greg Moriarty as ambassador is expected to strengthen the Australia-US alliance, particularly in the context of evolving global security dynamics. Moriarty’s experience in defense and international policy positions him well to navigate the complexities of the bilateral relationship.

Experts suggest that Moriarty’s leadership will be instrumental in advancing strategic initiatives under AUKUS, as well as addressing emerging challenges in the Indo-Pacific region. His appointment reflects Australia’s commitment to maintaining a robust partnership with the United States, emphasizing shared values and strategic interests.

“Mr Moriarty’s appointment is a strategic move that underscores Australia’s dedication to fortifying its alliance with the United States, particularly in light of current global security challenges,” noted a senior analyst at the Australian Strategic Policy Institute.

Looking Ahead

As Greg Moriarty prepares to assume his new role, attention will be focused on how he navigates the intricacies of Australia-US relations amid a rapidly changing geopolitical landscape. His appointment signals a continuity of strong diplomatic engagement, with an emphasis on collaboration and mutual support.

The transition also represents an opportunity for Australia to reinforce its strategic priorities with the United States, ensuring that both nations continue to work closely on issues of mutual concern, from defense cooperation to economic partnerships.

With Moriarty at the helm, the future of Australia-US relations looks set to be characterized by strengthened ties and a shared commitment to addressing global challenges.