The Russian defense ministry confirmed that one of its jets, a Sukhoi SU-24, had crashed in Syria but said it had been downed "presumably as a result of shelling from the ground."
The Russian warship Moskva, laden with long-range guided missiles, is a formidable symbol of Russian naval might in the fight against the Islamic State.
Lokomotiv Moscow midfielder Dmitri Tarasov insists he acted alone when he wore a T-shirt praising Russian President Vladimir Putin, leaving the player and team facing an anxious wait over possible sanctions for Tuesday's incident in Turkey.