North Korea says it had carried out a "very important test" at its space launch centre, as Pyongyang ramps up pressure on Washington over stalled nuclear talks.

North Korea's foreign minister brushes aside US President Donald Trump's fiery threat to destroy his nation, comparing it to a "dog's bark" and suggesting Pyongyang would not be deterred by the rhetoric.

North Korea's missile programme is a source of deep concern for the international community. The country's missile programme started with Soviet designed Scud missile, with its first batch reportedly coming via Egypt in 1976.

Bangladesh issues concern over the recent nuclear tests conducted by North Korea and cited the act citing as threat to regional peace and stability.

South Korea's military launches a volley of ballistic missiles simulating an attack on the North's nuclear test site Monday, Seoul said, in an exercise responding to a test of what Pyongyang says was a hydrogen bomb.