Japan will begin testing hypersonic missiles and other projectiles on Australian soil under a new defence agreement between the two countries announced August 18 [1, 2, 3]. The deal extends an enhanced arrangement for Japan to use Australian missile testing ranges for the next decade, according to Australian Defence Minister Richard Marles.
Marles said, "We have spoken previously about Australia being able to provide strategic depth to Japan across a range of areas, but one of them is the use of our ranges" [1]. He confirmed that the arrangement will cover a broad range of missile capabilities, adding, "We have agreed to progress a better and enhanced arrangement between Australia and Japan for Japan's use of our missile ranges over the next decade across a range of missile capabilities" [3].
The cooperation builds on a 2025 agreement in which Australia committed to a A$10 billion defence export deal to acquire stealth frigates from Japan over 10 years [1, 2]. Sources differ on the exact dollar conversion of the deal's value but agree on the amount in Australian dollars [1, 2].
Alongside missile testing, Australia and Japan will jointly develop a new defence project called Boobook, featuring a laser system designed to detect potential threats. Marles explained, "The project includes enhanced laser capability that can be put on land combat platforms as well as littoral platforms" [1]. The Boobook system will strengthen detection capabilities in both terrestrial and coastal environments [1, 2].
Japanese Defence Minister Shinjiro Koizumi said, "If the Japan Self-Defence Forces are able to conduct test launches of standoff missiles, such as hypersonic missiles, in Australia, it would be a groundbreaking development" [1].
The enhanced defence cooperation signals closer ties between the countries, with a focus on advanced missile technologies and joint development projects. The missile testing and technology sharing will proceed under the new agreement over the coming decade, reinforcing the strategic partnership between Japan and Australia [1, 2, 3].
