North Korea's army vows a 'merciless' response to any US provocation, as tensions soar over Pyongyang's nuclear programme and speculation mounts that it is preparing a fresh weapons test.
South Korea's foreign minister says that North Korea's nuclear capability is expanding fast, echoing alarm around the world over the isolated state's fifth nuclear test carried out in defiance of UN sanctions.
North Korea's army vows a 'merciless' response to any US provocation, as tensions soar over Pyongyang's nuclear programme and speculation mounts that it is preparing a fresh weapons test.
South Korea's foreign minister says that North Korea's nuclear capability is expanding fast, echoing alarm around the world over the isolated state's fifth nuclear test carried out in defiance of UN sanctions.
