Fragile peace collapses after multiple violations in 7 days
                                
                                
                                    (Newser) -
                                    Syria's military command has declared the US-Russian brokered ceasefire over, blaming the country's rebel groups for undermining the agreement that lasted seven days, reports the  AP . In a statement Monday, the Syrian military said that "armed terrorist groups" repeatedly violated the ceasefire that came into effect last...