The civilians, including a dozen people at a busy market, were killed in the rebel and opposition-held Idlib since Tuesday midnight, the Syrian Observatory for Human Rights says.
The State Department said it was assessing indications that the regime used chemical weapons on Sunday during its offensive in Idlib, the most significant remaining holdout of rebels.
Organization for the Prohibition of Chemical Weapons says toxic chemical contained 'reactive chlorine' used in Douma in 2018.
One of the hundreds of death certificates issued by the Syrian regime over the last few months, one is for American aid worker Layla Shweikani. Experts say it is now time for the US to seek justice.
In a Wall Street Journal article, Turkish President Recep Tayyip Erdogan called on the international community to take action, and warned that "the entire world stands to pay the price" otherwise.
A summit between the presidents of Turkey, Russia and Iran may determine whether diplomacy halts any military action in Syria's last rebel and opposition-held province. Presidents Erdogan, Putin and Rouhani are now in Tehran ahead of the talks.
Humanitarian workers are calling for a negotiated settlement to the Idlib crisis but will the Assad regime call off the military assault?
As residents in Idlib look to Turkey for security, UN envoy for Syria urges Turkish President Erdogan and Russian President Putin to "make a telephone call, organise a formula" which could help avoid a battle ending in a bloodbath.
The Syrian regime is gearing up for an expected offensive in Idlib province, which is home to nearly 3 million people and has a large al Qaida presence in addition to opposition and rebel groups.
Residents of eastern Ghouta were evacuated from the city of Douma last month after an alleged chemical attack. They say the incident on the night of April 7 was "like the end of the world."
The Organisation of the Prohibition of Chemical Weapons said on Saturday the mission visited "one of the sites" in Douma, where at least 40 killed in a suspected gas attack on April 7, and would draft a report based on the findings.
Syrian Observatory for Human Rights says the overnight raids targeted Yarmouk Palestinian refugee camp and a small enclave south of the capital Damascus under the control of militants.
Subscribe to our Youtube channel for all latest in-depth, on the ground reporting from around the world.
Copyright © 2022 TRT World.