22 January 2016, 11:43 GMT
TOKYO (Sputnik) — According to the Japanese Kyodo News, the sides pledged to cooperate on the issue in the UN Security Council.
On January 6, Pyongyang claimed it had successfully tested a hydrogen bomb, triggering a wave of condemnation from the international community.
The United Nations previously imposed sanctions on North Korea for three tests it carried out in 2006, 2009 and 2013.
