More than 100 were killed in clashes across Syria , observers say . At least 30 rockets hit Damascus overnight , according to opposition activist groups . Attacks mark increases in activity in Damascus , which ISIS had made its de facto capital .
More than 40 were killed in clashes across Syria , observers say . At least 30 airstrikes target Raqqa overnight , according to opposition activist group . Attacks mark increase in activity in Raqqa , which ISIS had made its de facto capital .