Who is Greg Moriarty and why was he appointed?

Greg Moriarty is Australia’s Defence Secretary and a veteran diplomat. He was appointed ambassador to the US to provide continuity on sensitive files, including AUKUS and critical minerals. His experience with interagency processes should help cut friction and keep negotiations practical with the Trump administration and US Congress.

How could this affect the AUKUS submarine deal?

The appointment should improve sequencing on export approvals, training, and sustainment plans. With clearer milestones, shipyard scheduling and supplier planning may stabilise. Investors should watch for joint statements that map timelines, licensing templates, and workforce pipelines, as these directly affect procurement certainty and subcontractor revenue visibility.

What does this mean for Australia US relations?

It signals a steady approach focused on outcomes. Expect less noise and more emphasis on practical fixes to known bottlenecks. This lowers the risk of sudden policy shocks that disrupt defence or minerals trade. For markets, steadier diplomacy improves predictability for contracts, shipping, insurance, and financing terms.

Where are the key risks now?

Execution risk remains. Export approvals, industrial security rules, and tariff reviews can still slow delivery. Capacity constraints at shipyards and in specialised labour may limit how fast projects scale. Investors should monitor backlog growth versus staffing, cash conversion, and any slippage reported in quarterly updates or regulatory filings.

Law and Government

January 27: Australia names Greg Moriarty US ambassador, AUKUS push

ByDanny Kontos January 27, 2026January 27, 2026

Australia named Greg Moriarty US ambassador on 27 January 2026, a move that signals continuity for AUKUS and steadier Australia US relations. With deep defence experience, Moriarty is expected to reduce policy friction and keep talks practical with the Trump administration. For investors, this lowers headline risk and may improve predictability around export approvals, procurement schedules, and critical minerals cooperation. We outline what this appointment could mean for defence supply chains, project timelines, and portfolio monitoring over the next 6 to 12 months.