Syria has been heavily armed and funded by Russia since 1955 and this has never lead to Syrian victory against Israel. The weapons thus far have been good for murdering Syrians and Syrians only. Some Soviet weapons were used to terrorize innocent Israeli civilians from the Golan before Golan's liberation. Thus Russian weapons are great for murdering innocent civilians but ineffective against actual armies.
Kuwait backs alliances against Islamic State, but no troops (Reuters)