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. Islamic State Staggers in Afghanistan, but Survives Jeff Seldin One of the Islamic State's most feared affiliates has suffered a significant setback, though U.S. officials caution reports that the terror group was "obliterated" are overblown. U.S. officials confirmed Thursday that Islamic State-Khorasan, as the terror group's Afghan affiliate is called, collapsed in the country's eastern Nangarhar province following months of fighting. "Afghan government and coalition operations against the group, along with the Taliban's campaign '¦ led to ISIS-Khorasan's collapse in Nangarhar and the surrender of hundreds of fighters to Afghan forces," a senior counterterrorism official told VOA, using an acronym for the group. "Surrendered [Islamic State] fighters said they were told to leave Nangarhar forKunar[province], where we assess the group still maintains a presence, as well as the northern provinces of Afghanistan," the official added. Afghans more optimistic The U.S. assessment contrasted with some more optimistic pronouncements from Afghan officials, who touted the victory in Nangarhar as conclusive. "No one believed one year ago that we would stand up and remain in Nangarhar, and thank God that today we have obliterated Daesh," President Ashraf Ghani said Tuesday during a speech in Jalalabad, using an Arabic acronym for IS. "It's not possible that they once again equip themselves in other areas of Afghanistan and threaten other parts of the country," Nangarhar Governor Shah MahmoudMiakheladded. Just two days earlier, Taliban officials touted their own success against the Islamic State's Afghan affiliate, calling the group's defeat in Nangarhar andKunarprovinces the result of a "decisive and large-scale" campaign that began in September. 'Systematically uprooted' "Over the course of the last five years, they were systematically uprooted," spokesmanZabihullahMujahid said in a statement Sunday, adding the Taliban had "rescued the oppressed people of Nangarhar from this scourge." Both the Taliban and Afghan government officials said almost 600 IS fighters had surrendered, along with women and children. Still, U.S. officials said the threat from IS-Khorasan, which is thought to have between 4,000 and 5,000 fighters across Afghanistan, was far from over. References Visible links Hidden links: 1. file://localhost/south-central-asia/us-takes-notice-more-islamic-state-branches-back-new-leader .