Jeong Yeon-doo, vice minister for strategy and intelligence at the foreign ministry, stated at the Nuclear Non-Proliferation Treaty (NPT) review conference that the North Korean nuclear issue “remains the most urgent challenge to the non-proliferation regime.

North Korea on Thursday said its testing spree this week involved various new weapons systems, including ballistic missiles armed with cluster-bomb warheads, as it pushes to expand nuclear-capable forces aimed at rival South Korea.

North Korea recently launched five short range ballistic missiles (SRBMs) armed with cluster munitions against an island target in the Sea of Japan for the second time this month, further trialing the warhead’s capabilities,

North Korea's navy might not be big on the world stage, but they are claiming they've built a destroyer that can rival America's equivalent vessels.