On January 25, 2016 Foreign Minister of Ukraine Pavlo Klimkin held a telephone conversation with Foreign Minister of the Republic of Korea Yun Byung-se, initiated by the South Korean side. During their phone talk ministers discussed perspectives of strengthening the international pressure on North Korea as a result of the nuclear tests on January 6.

Pavlo Klimkin reconfirmed Ukraine's position that violation by Pyongyang of the nuclear non-proliferation regime is unacceptable and reassured further support by Ukraine for initiatives on this issue within international organizations, particularly in the UN Security Council.