sorry, only german sauce
https://de.sputniknews.com/politik/20180918322349434-russlands-militaerflugzeug-verschwindet-nach-israels-attacke/
According to the Russian Ministry of Defence, a Russian military aircraft of type Il-20 disappeared from the radar late in the evening on 17 September during a flight near the Russian air base Hmeimim in Syria.
According to a source in the Russian state authority, Sputnik was informed in the early hours of Monday that contact with the crew of the military aircraft had broken off at 23:00 local time on Saturday night - the reconnaissance aircraft type Il-20 had disappeared 35 kilometres off the coast from the radar of the Russian air force base Hmeimim in Syria. At the same time an air attack by the Israeli armed forces against targets in Syria is said to have taken place. Several Israeli F-16 fighter jets were involved in the attack.
During the same period, a missile attack was fended off by the Syrian air defence in the city of Latakia. According to a Syrian source reporting to Sputnik, the enemy missiles were launched from the sea. Several of them had been fired in the approach to the targets in Latakia. This attack is said to have been led by Israeli military forces.
According to the source in the defence authority, rockets were launched by the French frigate "Auvergne" not far from Hmeimim and Latakia at the same time.
On the missing reconnaissance plane there are said to have been 14 military personnel together with the crew. The Israeli military meanwhile refuses to comment on the alleged attack of the Israeli air force against Syria. "We do not comment on reports from abroad," a spokeswoman for the Israeli defence forces told Sputnik.