Downed Russian jet analysis: Diplomatic fireworks aheadpublished at 09:23
Jonathan Marcus
BBC Defence correspondent
This is exactly the kind of incident that many have feared since Russia launched its air operations in Syria.
The dangers of operating near to the Turkish border have been all too apparent.
Turkish planes have already shot down at least one Syrian Air Force jet and possibly a helicopter as well.
There are conflicting reports as to whether it was ground fire or Turkish jets that brought down the Russian plane.
Air operations in the crowded skies over Syria just got a good deal more complicated.
The only mitigating factor is that initial reports suggest that two parachutes were seen so the Russian crew at least got out of their stricken aircraft. Diplomatic fireworks ahead!