Japan to conduct hypersonic missile tests in Australia under expanded defence pact

Australia has agreed to host testing facilities for Japan's advanced hypersonic missile systems as part of an expanded defence partnership between the two nations. The arrangement marks a significant escalation in military cooperation between Canberra and Tokyo, reflecting shared strategic concerns about regional security dynamics.

The deal comes as both countries face mounting pressure to strengthen their defence capabilities in response to China's military modernisation and expanding influence in the Indo-Pacific. Hypersonic weapons, which travel at speeds exceeding Mach 5, represent cutting-edge military technology that several nations are actively developing to maintain strategic advantage.

Japan's decision to conduct these tests in Australia rather than domestically reflects both the technical requirements for such programmes and the deepening alignment between the two regional powers. The partnership also aligns with broader efforts by the United States and its regional allies to enhance military interoperability and deterrence capabilities in the Indo-Pacific.

Both nations have previously committed to increasing defence spending amid geopolitical tensions. Australia has significantly elevated its military budget in recent years, while Japan has also expanded its defence investments following shifts in its security policy and regional threat assessments.