So, the strike in question was near Palmyra far from the Lebanese border. This supports the belief that the strike was intended to assist IS which is now hard pressed by R+6 forces in that area.
Why should Bibi fear Russia when Israel is the 51st state?
Netanyahu does not seem to fear Russia
Col. W. Patrick Lang, US Army (ret.), former military intelligence officer at the US Defense Intelligence Agency
Israeli Policymakers: ISIS Is ‘Useful Tool’ Against Syria