NORTH KOREA test-fired two ballistic missiles today after promising an “offensive and overwhelming” response to US-led military exercises off its coast.

Operation Freedom Edge, which ended at the weekend, was the first “multidomain trilateral drill” between the US, Japan and South Korea, and featured a US nuclear-powered aircraft carrier, the USS Theodore Roosevelt.

A multidomain drill involves co-ordinated activity across the “domains” of air, sea, land, space and cyberspace.