Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. US-Backed Alliance Launch Operation to Re-take Raqqa by VOA News A U.S.-backed alliance of Kurdish and Syrian fighters has launched an operation to re-take the Islamic State group's Syrian bastion, Raqqa. A commander of the Syrian Democratic Forces, or SDF, in Ein Issa, 50 kilometers north of Raqqa, announced the start of the campaign Sunday. THE SDF is dominated by the main Syrian Kurdish fighting force known as the People's Protection Units, or YPG. Raqqa, Syria Turkey views the YPG as a terrorist organization, but the United States believes the YGP is the only militia capable of undertaking the task. Washington has agreed that Turkey will not participate in the fight to re-take Raqqa. SDF spokesman Talal Sello told the French News Agency, AFP, "we have agreed definitively with the (U.S.-led) international coalition that there will be no role for Turkey or the armed factions allied with it in the operation." America's European allies have also objected and expressed strong skepticism about any major role for YPG. They fear that having the Kurds in the vanguard of an assault on Raqqa, historically a predominantly Arab city, would fuel sectarian rivalries.