President Yoon Suk Yeol said Thursday that South Korea will never "sit idle" in response to North Korea's troop dispatch to Russia and take necessary measures "step by step," depending on the extent of the military cooperation between Pyongyang and Moscow.

South Korean President Yoon Suk Yeol and Polish President Andrzej Duda on Thursday condemned North Korea's dispatch of troops to Russia for its war against Ukraine as a global security threat, Yoon's office said.

President Yoon Suk Yeol condemned North Korea's military cooperation with Russia during a summit held with Polish President Andrzej Duda in Seoul Thursday, saying North Korea's troop dispatch to Russia presents a threat that transcends borders.