Fifteen people were killed on Saturday in airstrikes by the Syrian regime and its Russian ally on the northwestern province of Idlib.
In the town of Ariha, seven children were among 11 civilians killed in Syrian airstrikes that targeted two residential buildings and also wounded 28 other people, said the Syrian Observatory for Human Rights.
One of the dead was a small boy who was found under the rubble by White Helmets rescuers, his face bloodied and his body covered in white dust, a photographer who works with AFP said from the scene.
He also witnessed rescuers digging through the rubble of a collapsed roof for more victims, while a member of the White Helmets moved the body of a young man into the back of a pickup truck.
Ariha made headlines after it was pummeled Wednesday by warplanes that claimed the lives of 10 civilians, according to the Observatory, when a picture of three sisters struggling for their lives went viral on social media networks.
The picture showed two dust-covered girls trapped in the rubble and clutching their baby sister by her shirt as she dangles from a bombed out building. One of the girls later died of her wounds while the other two are hospitalized and fighting to stay alive, according to local medics.
Russian airstrikes on northern Hama province Saturday that hit an ambulance killed three rescuers while another child died in regime bombardment elsewhere in the Idlib region, the Observatory said.
Idlib and parts of the neighboring provinces of Aleppo, Hama and Latakia are under the control of Hayat Tahrir al-Sham, an extremist group led by Syria's former al-Qaeda affiliate.
The region is supposed to be protected from a massive regime offensive by a September buffer zone deal, but it has come under increasing bombardment by the regime and Russia over the past three months.
In the Syrian regime airstrike campaign, backed by Russia, warplanes have targeted medical centers, water plants and residential areas, in what the UN and rights groups call a deliberate campaign that amounts to war crimes.
Most of the civilians living in the opposition stronghold have already been displaced by other bouts of violence, and have chosen not to live in regime-captured areas.
The UN human rights chief, Michelle Bachelet, said Friday that the world's most powerful nations are failing to show leadership in dealing with the Syrian crisis "resulting in a tragedy on such a vast scale that we no longer seem to be able to relate to it at all."
According to her office, at least 450 civilians were killed since the offensive began in April 30, including more than 100 in the last 10 days alone. More than 440,000 people were displaced inside the crowded enclave to escape the airstrikes.
