WASHINGTON (AP) — Secretary of State John Kerry is heading abroad to rally international support for ending the three-year civil war in Syria and help its victims. But the main opposition group that is seeking to oust Syrian President Bashar Assad still hasn’t decided whether to attend a high-level meeting later this month to potentially start negotiating a cease-fire.

The State Department said Wednesday that Kerry leaves on Saturday for Paris, where he will join foreign ministers from 11 nations working on a Syria proposal.