North Korea nuclear test tunnels at Punggye-ri 'destroyed'

North Korea appears to have blown up tunnels at its only nuclear test site, in a move to reduce regional tensions.

Foreign reporters at the Punggye-ri site in the north-east said they had witnessed a huge blast. Pyongyang later said the site had been dismantled.

The move by the North was seen as part of a diplomatic rapprochement with South Korea and the US.

But scientists believe it partially collapsed after the last test in September 2017, rendering it unusable.

It came ahead of a planned summit between US President...