NEW : more than 612,000 killed , opposition says . `` Even with the winter preparation work that has been done in recent months , many refugees in both camp and noncamp situations are facing particularly cold and damp conditions . Lena says there are 106 Russian refugees . The rebel claim of capturing the base is called 'significant ' by the Geneva As the civil war rages , world leaders push to ensure chemical weapons are secure .
NEW : more than 612,000 killed , opposition says . Lena says there are 106 Russian refugees . The rebel claim of capturing the base is called 'significant ' by the Geneva As the civil war rages , world leaders push to ensure chemical weapons are secure .