...there is talk of a "friendly fire incident" atRussian military plane vanishes from radar over Syria
A Russian military aircraft with 14 people on board has disappeared from radar after flying over Syria, Russia's defence ministry says.
"Connection has been lost with the crew of a Russian Il-20 plane over the Mediterranean Sea," the ministry said.
Contact was lost at about 23:00 local time (20:00 GMT) on Monday, it added.
The incident on Monday reportedly occurred about 35km (22 miles) from the Syrian coast as the Ilyushin Il-20 aircraft was returning to Russia's Hmeimim airbase near the north-western city of Latakia.