South Korea believes North Korea has sent troops to Russia, marking a grave security threat to the international community that Seoul will respond to with all available means, the presidential office said in a statement on Friday.

South Korean intelligence has found that North Korea​ has dispatched 12,000 troops, including special operation forces, to support Russia's war against Ukraine​, news reports say.

South Korea’s spy agency says North Korea has dispatched troops to support Russia’s war against Ukraine, a development that could bring a third country into the war and intensify a standoff between No