ISIS fighters jailed in Syria - including Brit Jihadi Jack - have been warned they now face execution without trial.
President Bashar al-Assad is setting up one-sided courts where terror suspects will be tried under hardline local laws.
In Syria, membership of ISIS is a hanging offence and Assad promises foreign fighters will not escape punishment.
Thousands of prisoners have already been secretly executed inside Saydnaya Prison, claims Amnesty International.
Thousands more are said to have died through torture and starvation inside the brutal jail near Damascus.
Assad made his comments in an interview with Paris Match when asked about a deal with a Kurdish-led force which would eventually bring the north of the country under government control.
The Syrian Democratic Forces - who defeated ISIS with the help of the US-led coalition - are now holding more than 10,000 militants.
There are those (I'm not one) who think the UK Jihadi's should stand trial in this country (and get let off).
Should we let Syria deal with these turncoats as they see fit?