The Albanese government is giving 49 M1A1 Abrams tanks to Ukraine, despite earlier this year apparently playing down the prospect of the donation.
The latest Australian package is worth A$245 million. It brings the total Australian military aid to Ukraine since the full-scale Russian invasion in 2022 to A$1.3 billion, and overall Australian support to A$1.5 billion.
When asked about a possible gift of the tanks in February, Defence Minister Richard Marles said it was "not on the agenda".
Government sources say donating the tanks required US approval since Australia had purchased them from Washington, so there had been a process to go through.
Minister for Defence Industry and Capability Delivery Pat Conroy, who is on his way to the NATO defence ministers meeting in Brussels, announced the decision in London. In Brussels, Conroy will meet with the Ukraine defence minister.
Australia, New Zealand, Japan and South Korea form the "Indo-Pacific Four" group of non-NATO countries attending the meeting.
The 49 tanks are near the end of their life, so a small number will have to be repaired before they are delivered. Alternatively, they could be used as spare parts if Ukraine wants them delivered more quickly. Ukraine will decide which option to pursue.
The Australian army is retaining a handful of the M1A1 Abrams to help the transition to the M1A2 fleet of tanks.
Conroy said: "We stand shoulder-to-shoulder with Ukraine in their fight against Russia's illegal invasion. These tanks will deliver more firepower and mobility to the Ukrainian armed forces, and complement the support provided by our partners for Ukraine".