What’s known — and not — about US drone and Russia jet crash

When a Russian fighter jet collided with a large U.S. surveillance drone over the Black Sea on Tuesday, it was a rare but serious incident that triggered a U.S. diplomatic protest and raised concerns about the possibility Russia could recover sensitive technology.

U.S. 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 Defense Department could eventually declassify and release video it has of the collision.