Russian President Vladimir Putin told Syrian President Bashar al-Assad on Monday that Moscow would supply its ally with an S-300 anti-aircraft missile system, Syrian Presidency announced.

AVA- In a phone call, the two leaders discussed the latest developments and the implementation of Idlib agreement, the Syrian presidency said in a statement.
“President Putin … informed President Assad that Russia will develop the Syrian air defense systems.”
President Assad meanwhile extended condolences to his Russian counterpart over the downing of Il-20 aircraft last week in Syria’s Latakia, according to the Syrian Presidency.
For his part, Putin blamed the Israeli air force for the Russian aircraft, informing Assad that Moscow will deliver S-300 to Damascus.
Last week (on September 17), the Israeli Air Force used the Russian Il-20 as a shield while attacking targets in Syria, lead to the downing of the aircraft and the killing of 15 Russian servicemen.