Foreign Minister Cho Tae-yul discussed response steps to this week's summit between the leaders of North Korea and Russia with his U.S. and Japanese counterparts.

According to Seoul's foreign ministry on Friday, Cho, who is visiting the U.S., held separate phone talks with U.S. Secretary of State Antony Blinken and Japanese Foreign Minister Yoko Kamikawa.

The three ministers shared the view that Pyongyang and Moscow's signing of a comprehensive strategic partnership treaty, agreeing to enhance military and economic cooperation, poses a serious threat to their security, as well as peace and stability on the Korean Peninsula and beyond.

Cho and Blinken strongly condemned such development, while Cho and Kamikawa expressed a grave concern.

Stressing that any type of cooperation that provides direct or indirect support for the North's military reinforcement is in violation of UN Security Council resolutions, Cho explained Seoul's latest unilateral sanctions on the North and extended export controls on Russia.

The U.S. State Department, meanwhile, said Blinken thanked Cho for Seoul's continued support for Ukraine in its war against Russia.

On Thursday, the South Korean government condemned the new defense pact signed by North Korea and Russia and reconsider a possible increase in its level of support for Ukraine.