beirut lebanon army deploy along country entire eastern border syria remain station recently recapture areas islamic state militants army chief general joseph aoun say friday remark appear confirm comment lebanese shi ite group hezbollah hand point control along border military army deploy onwards along extent eastern border defend aoun say ceremony commemorate lebanese soldier kill islamic state army offensive last month end militants withdraw last foothold along border ceasefire deal syrian army hezbollah fight jihadists separately syrian side hezbollah leader sayyed hassan nasrallah say july would ready hand territory capture lebanese army request hezbollah lead campaign area month oust nusra front jihadist group last foothold along border security source say hezbollah begin hand point control iran-backed hezbollah play critical role vanquish sunni muslim jihadists border region six-year-long syrian war part military support syrian president bashar al-assad group ally lebanese president michel aoun key defeat militants qalamoun area south 2015 syrian town qusair 2013. lebanon southern border israel hezbollah foe patrol unite nations interim force lebanon lebanese army deploy along entire eastern border army chief