North Korea publishes photos of 'small nuclear warheads'

North Korea has revealed small nuclear warheads, which it said can be fitted on to short-range missiles.

Pyongyang has long claimed it has tactical nuclear weapons, capable of hitting targets in South Korea.

But the photos published in its state newspaper on Tuesday are the first time it has provided evidence.

However, it is impossible to verify whether they are the real deal. Until North Korea tests one of these devices, we are left guessing.