moscow six russian long-range bombers strike islamic state target near town albu kamal syria deir al-zor province wednesday russian defence ministry say statement tu-22m3 bombers take base russia overfly iran iraq launch strike say ministry say plan bomb islamic state supply depots militants armor vehicles satellite drone surveillance confirm designate target destroy say sukhoi-30sm fighter jet base hmeymim air base syria use russian force escort bombers syrian air space bombers safely return base russia tuesday accuse unite state provide de-facto cover islamic state units syria pretend fight terrorism middle east specifically russian defence ministry say u.s. air force try hind russian strike islamic state militants around albu kamal ask russian allegations colonel ryan dillon spokesman u.s.-led coalition fight islamic state say russian ministry defense statements accurate air campaign think reason start know come late barrage lie russian long-range bombers strike islamic state target syria