the us and russia are giving conflicting accounts about how an american surveillance drone plunged into the black sea. washington says two russian jets tried to intercept the drone, before striking a propeller. russia s ambassador to the us has denied any collision took place and claimed the aircraft s presence was a provocation. here s our north america correspondent, peter bowes. an american mq 9 drone and two russian fighterjets. their encounter, according to the pentagon, lasted up to a0 minutes in international airspace. they were over the black sea, where tensions have risen ever since russia s annexation of crimea in 2014. and where us surveillance airdraft have been flying regularly since the start of the war last year. the pentagon says one of the russian jets moved in front of the drone and eventually forced the unmanned aerial vehicle, or uav, to crash into the sea. it was a complete loss of the aircraft. we are continuing to assess exactly what happened but i think, based o