A Russian Su-27 aircraft collided with an American MQ-9 Reaper drone over the Black Sea. The impact caused the drone to fall into the water. The command of the US Air Force in Europe accused Russia of dangerous maneuvers around the drone that took place in international airspace. Before the collision, two Russian planes were dumping fuel and also flew in close proximity to the drone. The US military added that one of the Su-27s engaged the propeller of the MQ-9 while maneuvering. Due to this, the drone lost control and americans was forced to sink it.