amman jet believe syrian russian strike heavily crowd residential areas besiege rebel enclave near damascus kill least 27 people injure dozens third week stepped-up assault residents aid workers war monitor say monday civil defense workers say least 17 kill town hamoriya aerial strike marketplace nearby residential area nearly 30 strike past 24 hours strike several towns densely populate rural area east damascus know eastern ghouta four civilians kill town arbin rest come strike misraba harasta civil defense workers say syrian observatory human right monitor conflict say casualties sunday big daily death toll since stepped-up strike begin 20 days ago monitor say nearly 200 civilians kill strike shell include many women children period eastern ghouta besiege army troop since 2013 attempt force rebel enclave submission government recent months tighten siege residents aid workers say deliberate use starvation weapon war charge government deny unite nations say 400,00 civilians besiege region face complete catastrophe aid deliveries syrian government block hundreds people need urgent medical evacuation allow outside enclave eastern ghouta last remain large swathe rebel-held area around damascus reach evacuation deal surrender weapons return allow fighters go rebel-held areas farther north target civilians ... jet hit us rebel checkpoints sadeq ibrahim trader say phone hamoriya may god take revenge regime russia say abdullah khalil another resident say lose members family air strike arbin search survivors among rubble intensify bombardment eastern ghouta follow rebel attack last month army complex heart region army use bomb nearby rebel-held areas residents say however failure army dislodge rebel complex prompt believe retaliatory indiscriminate attack civilians eastern ghouta government advance since last year force people flee deep increasingly overcrowd towns loss farmland increase pressure scarce food supply eastern ghouta part several de-escalation zone russia broke rebel across syria free army redeploy areas regain grind rebel accuse syrian government russia violate zone say mean charade divert attention heavy daily bomb civilian areas syrian government russia deny jet bomb civilians insist strike militant hideouts syrian russian jet bomb residential areas eastern ghouta witness monitor