The US Pentagon released a video showing a Russian Su-27 fighter jet getting too close to a US drone over the Black Sea.
Russia claimed the drone had crashed due to "provocative" flying maneuvers near Crimea.
Meanwhile, Russia unsuccessfully attempted to capture the now-ruined eastern Ukrainian town of Bakhmut, which Ukrainian forces continue to defend.
On Tuesday, a Russian Su-27 fighter jet intercepted a US military drone over the Black Sea.
The Pentagon released footage of the close encounter, showing the fighter jet getting within 20 feet of the drone.
However, Russia denied there was any collision, and instead claimed the drone crashed after making "sharp maneuvers" close to Russian airspace.
The Kremlin has not yet decided if it will try to retrieve the drone debris.
Meanwhile, Ukrainian forces continue to defend the ruined town of Bakhmut, which is being targeted by Russian assaults.
The Russian-installed leader of Ukraine's semi-occupied Donetsk region described the attempts to capture the town as "difficult", with no signs that Ukraine is ready to withdraw.
These events highlight ongoing tensions between Russia and the US, as well as Russia's efforts to maintain control in eastern Ukraine.