WASHINGTON has refused to show the “yellow card” to Syrian extremists who massacred scores of civilians two weeks ago.

State Department spokesman Mark Toner faced tough questions at his daily press conference on Tuesday over the continued US support for Ahrar ash-Sham.

The militants killed 42 people and kidnapped about 60 in the village of Zara in southern Hama province on May 12, prompting Syria and its allies to express outrage.