North Korea's Kim to bolster front-line defences against 'arch enemy'

North Korean leader Kim Jong Un called on top military officials to bolster front-line units and turn the southern border into an "impregnable fortress", state media reported Monday.

Kim gave the instruction at a meeting on Sunday where a photo released by the Korean Central News Agency (KCNA) showed him presiding over commanding military officers wearing full dress uniform.

Kim also talked about the ruling party's "policy of territorial defence on strengthening the first-line units in the southern border and turning the border line into an impregnable fortress", according to KCNA. Projects to modernise the military "should be stepped up to newly define the concept of operations in all spheres", he was also quoted as saying.