Updated 1.52pm with US reaction.
Russia's ambassador to the United States on Wednesday called on Washington to stop "hostile" flights near his country's border, after an American drone was intercepted by Russian fighters over the Black Sea and crashed.
"We assume that the United States will refrain from further speculation in the media and stop flights near Russian borders," ambassador Anatoly Antonov wrote on Telegram. "We consider any action with the use of US weaponry as openly hostile."
A Russian fighter jet on Tuesday dumped fuel on an American drone over the Black Sea and then collided with it, causing the drone to crash, the US military said, slamming the manoeuvre as "reckless".
US European Command said two Russian Su-27 fighters intercepted the unmanned MQ-9 Reaper over international waters and one clipped its propeller.
Russia's defence ministry said Tuesday it scrambled fighter jets following the detection of a US drone over the Black Sea but denied causing it to crash.
The defence ministry in Moscow said it detected an American MQ-9 drone "over the waters of the Black Sea in the area of the Crimean peninsula" flying "towards the Russian state border".
US calls on Russia to operate military aircraft safely
US Defence Secretary Lloyd Austin called Wednesday for Moscow to operate its aircraft safely and professionally, saying a collision between a Russian warplane and an American drone was part of a pattern of "risky" actions.
"This hazardous episode is a part of a pattern of aggressive, risky and unsafe actions by Russian pilots in international airspace," Austin said at the start of a meeting of countries supporting Ukraine's fight against invading Russian forces.
"Make no mistake, the United States will continue to fly and to operate wherever international law allows. And it is incumbent upon Russia to operate its military aircraft in a safe and professional manner," he added.
Russia's war in Ukraine has led to heightened fears of a direct confrontation between Moscow and the NATO alliance, which has been arming Kyiv to help it defend itself.
The United States uses MQ-9s for both surveillance and strikes and has long operated over the Black Sea, keeping an eye on Russian naval forces.