Fighters loyal to the Islamic State have seized substantial swaths of territory in Afghanistan for the first time, witnesses and officials said, wresting areas in the east from rival Taliban insurgents in a new threat to stability.
Witnesses who fled fighting in Nangarhar province said that hundreds of insurgents pledging allegiance to the Islamic State pushed out the Taliban, scorching opium poppy fields that help to fund the Taliban's campaign to overthrow the Afghan government.
They also distributed directives purportedly from the Islamic State's Middle East-based chief, Abu Bakr al-Baghdadi, although it was not clear whether he issued them for the Afghan theater or if previous edicts may have been translated.