The US has identified at least four occasions on both sides of the Iraq-Syria border where ISIL has used mustard agents.
Maraykanka ayaa sheegay in ugu yaraan afar shil ku lug leh labada dhinac ee isku dhacu ee Ciraaq-Suuriya gobolka halkaas oo ISIS la isticmaalayo hubka kiimikada khardal le'eg, sida dhiibay sarkaalka.