PARIS-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.
“Several times before the collision, the Su-27s dumped fuel on and flew in front of the MQ-9 in a reckless, environmentally unsound and unprofessional manner,” it said. Moscow denied causing the crash of the drone, which the Pentagon said was on a routine ISR (intelligence, surveillance, reconnaissance) mission.
“As a result of a sharp manoeuvre... the MQ-9 unmanned aerial vehicle entered an uncontrolled flight with loss of altitude and collided with the surface of the water,” the Russian Defense Ministry said, adding that the two Russian jets had no contact with the US aircraft and did not use their weapons.
The US State Department said it had summoned Russia’s ambassador to protest. White House national security spokesman John Kirby later said, “obviously, we refute the Russians’ denial” and added that the United States is trying to prevent the fallen drone from getting into the wrong hands.
“Without getting into too much detail, what I can say is that we’ve taken steps to protect our equities with respect to that particular drone -- that particular aircraft,” Kirby told CNN.
“We obviously don’t want to see anybody getting their hands on it beyond us.”
Russian intercepts over the Black Sea are common, Kirby told journalists in Washington, but this one “is noteworthy because of how unsafe and unprofessional it was, indeed reckless that it was”. NATO diplomats in Brussels confirmed the incident but said they did not expect it to immediately escalate into a further confrontation.
A Western military source, speaking to AFP on condition of anonymity, said that diplomatic channels between Russia and the United States could help limit any fall-out. 
“To my mind, diplomatic channels will mitigate this,” the source said. Russia’s invasion of Ukraine in February last year 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.
Reports of a missile strike in eastern Poland in November briefly caused alarm before Western military sources concluded that it was a Ukrainian air defence missile, not a Russian one.