Amnesty International says militant groups backed by Saudi Arabia, Turkey, Qatar, and the US are involved in "a chilling wave of abductions, torture and summary killings" amounting to "war crimes" in Syria.
In a report on Tuesday, Amnesty named al-Nusra Front, which is the Syrian branch of al-Qaeda, as well as the so-called Ahrar al-Sham, Nureddin Zinki, the Levant Front and Division 16 as groups engaged in war crimes in Syria.
The groups have detained and tortured lawyers, journalists, and children among others for criticizing them, the London-based group said.
Some of the groups in question “are believed to have the support of governments such as Qatar, Saudi Arabia, Turkey and the US,” it added.
The US has thwarted a Russian bid in the United Nations to put Ahrar al-Sham on the list of terrorist groups.