Daniel Martindale helped the Kremlin target Ukrainian troops and was then spirited out of eastern Ukraine by Russian special forces.

A Russian official says American Daniel Martindale has been rewarded with citizenship for spying on Ukraine, "by decree of our President Vladimir Putin."

Two Russian agents were killed by Ukrainian security forces Sunday following reports that the Russian operatives assassinated Ukrainian Colonel Ivan Voronych.

Despite the changes in warfare, Russian forces retain the ascendancy and are making slow but steady advances in the east and north of Ukraine. Russia has also caught up in UAV technology after falling behind early in the war, according to military analysts, and like its enemy is churning out drones domestically at a rate of millions a year.

Ukraine's security agency says it has killed Russian agents suspected of assassinating a senior officer in Kyiv.

Zelenskyy has emphasized the importance of expanding production to counter Russia's invasion and strike deeper into Russian territory.

U.S. President Donald Trump's decision to ramp up arms shipments to Ukraine is a signal to Kyiv to abandon peace efforts, Russia said on Thursday, vowing it would not accept the "blackmail" of Washington's new sanctions ultimatum.