What is known about US-Russia military air crash?
When a Russian fighter jet collided with a large US surveillance drone over the Black Sea on Tuesday, it was a rare but serious incident that triggered a US diplomatic protest and raised concerns about the possibility Russia could recover sensitive technology.
US and Russian officials had conflicting accounts of the collision between the MQ-9 Reaper drone and the Russian Su-27 fighter jet – each blaming the other. But a Pentagon spokesman raised the possibility that the Defence Department could eventually declassify and release video it has of the collision.
