US seeks Kim Jong-un

North Korea crisis: US seeks Kim Jong-un asset freeze

The draft resolution circulated to the Security Council members comes after North Korea's sixth nuclear test and repeated missile launches.

Pyongyang also claims to have developed a hydrogen bomb and continues to threaten to strike the US.

China and Russia are both expected to oppose further sanctions.

North Korea is already under highly restrictive sanctions imposed by the UN that are intended to force the leadership to curtail its weapons programmes.