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.

Dnipro bears the brunt of Moscow's first retaliatory strike after Ukraine fires U.S.-made missiles into Russia, and Ukraine claims Moscow may have used an ICBM.