Aust diplomat condemns North Korea tests

Australia's senior diplomat in charge of nuclear non-proliferation issues has told an international forum North Korea's conduct poses an "increasingly grave danger" to regional and global peace and security.

Brendon Hammer issued a formal statement overnight to an extraordinary session of the Comprehensive Test Ban Treaty Commission in Austria.

"Australia join the overwhelming majority of the international community in utterly condemning DPRK's repeated testing of nuclear weapons," Mr Hammer said, adding that the tests underlined the need for the treaty to enter into force.