Air strikes kill 15 as fighting flares in Syria's Aleppo

Air strikes on rebel-held districts of Syria's contested city of Aleppo, including one that struck near a hospital, have killed 15 civilians and wounded many others, as fighting in the country's largest city intensified once again, opposition activists said.

The northern city has seen an uptick in violence in the last two days, with government forces pounding rebel-held eastern parts of the city with air strikes while rebels are shelling western, government-held districts.