Syrian activists say hundreds of people have been killed in airstrikes targeting rebel-held areas over the past few days.

The Syrian government forces continues to use barrel bombs - explosives packed inside drums and thrown from helicopters - which have been condemned as indiscriminate weapons.

The government has also deployed more troops to recapture the strategic Qalamoun area.

Al Jazeera's Hashem Ahelbarra reports.

Source: Al Jazeera