The U.S. says there will be a "firm response" as Ukrainian forces holding ground in Russia's Kursk region now face North Korean troops "engaging in combat."

The attack ended a two-month pause in missile strikes on Kyiv, which had only been hit by Russian drones during that period.

By Pavel Polityuk and Tom Balmforth KYIV (Reuters) -Blasts boomed across Kyiv on Wednesday morning after officials said Russia launched its first missile attack on the Ukrainian capital since August,

Secretary of State Antony Blinken says the Biden administration is determined in its final months to help Ukraine keep fighting.

President Joe Biden intends to bolster U.S. military support to Ukraine in the final months of his administration, U.S. Secretary of State Antony Blinken said on Wednesday, after Russia launched a sophisticated missile and drone attack on Kyiv.