Kyiv's forces struck an advanced Russian air-defense system in the border Kursk region, according to Ukraine's military, shortly after the U.S. green-lit attacks over the border using long-range American weapons and as North Korean soldiers are expected to join front-line clashes in the area.

"Russia's own troops are not enough" to push Ukraine out of the Russian border region, Kyiv's top commander has said.

Ukrainian troops from the 36th Marine Brigade have successfully repelled yet another Russian attack near the village of Zeleny Shlyakh in Russia's Kursk Oblast. Source: a video posted by the 36th Marine Brigade;