Ukraine claims a drone strike on a military target inside Russia. Ukrainian special forces said on Monday that they had destroyed an unmanned observation tower in Russia’s Bryansk region using a drone strike, a rare public acknowledgment of a cross-border attack that underscored Kyiv’s increasing willingness to directly hit Russian territory.

The timing of the strike was not clear but the Kraken unit, which reports to Ukrainian military intelligence, released a video that it said showed the assault on its Telegram channel on Monday.

It comes days after a brief armed incursion into a Russian border village in Bryansk by partisans claiming to fight for Ukraine, a rare known case of a raid inside Russia that the Kremlin described as a “terrorist” attack.

The Russian Volunteer Corps, a group opposed to President Vladimir V. Putin of Russia, claimed on Thursday that it briefly took control of the small village of Lyubichane, near the border with northeastern Ukraine.