WILLIAM BRANGHAM:

Amnesty's report says that somewhere between 5,000 and 13,000 people were tortured and executed at one military prison outside Damascus between 2011 and 2015.

Amnesty alleges that officials at the highest level of the Syrian government approved the killings, as did the grand mufti of Syria, the highest ranking religious figure in the country.

I'm joined now by Sunjeev Bery. He's Amnesty's director of advocacy for the Middle East and North Africa.