At least 50 people have been killed in a wave of suicide bombings and gun attacks in southern Syria, while some reports putting the death toll as high as more than 100 dead.
A Russian transport plane has crashed in Syria killing all 26 passengers and six crew members believed to have been on board, the defence ministry says.
Syrian government forces have killed more than 500 civilians during a week of intense bombardment of a rebel enclave near Damascus, activists say.
At least 94 people have been killed in attacks by the Syrian government and its allies in the rebel pocket of eastern Ghouta in the space of 24 hours.
At least five people are believed to have been killed after a rocket struck close to the entrance of a trade fair in the Syrian capital, Damascus.
At least 12 people have been killed, and a hospital severely damaged, following Syrian or Russian airstrikes in the rebel-held Idlib province of Syria.
At least 22 people have been killed, and dozens of others wounded, following a bomb blast amid a bus convoy waiting to enter the Syrian city of Aleppo.
At least 58 people have been killed, and dozens more wounded, following a suspected chemical attack in Syria.
At least 16 people have been killed, following an airstrike on a prison in the rebel-held Idlib province, in Syria.
At least 33 people have been killed, following an airstrike which struck a school sheltering displaced people, near the city of Raqqa, in Syria.