KIM THREATENS he may hit South Korea:

North Korea has threatened action against the South after it joined a US-led initiative to intercept ships suspected of trafficking weapons of mass destruction.

The communist North's military said it will respond with "immediate, strong military measures" if South Korea stops and searches any of its vessels.

In a statement it said it no longer considers itself bound by the armistice that ended the Korean War, following the South's participation in the Proliferation Security Initiative (PSI).