(VOVworld) - Seoul is considering "various" unilateral sanctions against Pyongyang following the adoption of tough sanctions by the UN Security Council (UNSC) on North Korea.

South Korean army K-1 tanks move during an annual exercise in Yeoncheon, near the border with North Korea, Thursday, March 3, 2016. (Photo: Ahn Young-joon/AP)

Jeong Joon-hee, spokesman for the Ministry of Unification, said during a regular press briefing on Friday that the South Korean government, as the president said, is currently doing its best to create an environment in which North Korea will realize it can't possibly survive with nuclear weapons and will have no choice but to change.

Jeong Joon-hee said Korea was contemplating actual steps towards this and is reviewing various measures, adding that the exact time of the decision will likely be announced soon.

On the same day, Japan’s Foreign Minister Fumio Kishida condemned North Korea's nuclear missile development as "unacceptable".

Answering media questions about North Korea’s latest test fire, the Russian Ambassador to the UN Vitaly Churkin said Pyongyang’s firing of short-range projectiles means that North Korea haven’t drawn the proper conclusions  following UN latest imposition of sanctions.

Japan’s UN ambassador, Motohide Yoshikawa, said, this is the way North Korea always reacts to what the UN has done and they may do again.