Activists, analysts say that internal conflicts are posing the biggest threat to ISIS

Reports from activists and residents in areas under Islamic State control suggest that rising tensions between fighters, an increase in guerrilla attacks, and difficulty recruiting new members is harming the militant group, with the biggest threat coming from within its own ranks. Tensions are high between foreign and local fighters in Syria, one local resident told The Washington Post, because foreign fighters live in the cities, where airstrikes are less common due to the risk of civilian casu...