Australia, the U.K. and the U.S. say they will develop hypersonic missiles

https://www.npr.org/2022/04/06/ [login to see] /australia-u-k-u-s-hypersonic-missiles
The United States, United Kingdom and Australia announced Tuesday they will work together via the recently created security alliance known as AUKUS to develop hypersonic missiles.

The move comes amid growing concern by the U.S. and allies about China's growing military assertiveness in the Pacific. U.S. President Joe Biden, British Prime Minister Boris Johnson and Australian Prime Minister Scott Morrison announced the plan after holding a check-in on the progress of AUKUS, the Indo-Pacific alliance that was launched by the three countries in September.

The leaders said in a joint statement they are "committed today to commence new trilateral cooperation on hypersonics and counter-hypersonics, and electronic warfare capabilities, as well as to expand information sharing and to deepen cooperation on defense innovation."