The human rights activist and Nobel Peace laureate Tawakkol Karman strongly condemned the chemical attack in Douma, the last rebel-held stronghold near Syria's capital, which left at least 70 people and affected hundreds. 

In a statement published recently on social media, Karman described the poisonous attack as a humanitarian disgrace, holding Iran and Russia accountable for their support for Bashar al-Assad’s regime that kills its own people. 

She also condemned the lack of action by the international community that, as she said, is watching silently as “some regimes in the Middle East keep destroying cities and homes, and terrorist groups wreak havoc everywhere. 

The White Helmets, a group of rescuers operating in opposition-held areas in Syria, said on Saturday that most of the fatalities were women and children.

"Seventy people suffocated to death and hundreds are still suffocating," Al Jazeera reported, adding that the death toll was expected to rise as many people were in critical condition.

The channel said that chlorine gas and an unidentified but stronger gas were dropped by the Syrian regime on Douma.