Video claims ISIS militants have beheaded American hostage Peter Kassig; Bill Cosby’s brief response to sexual assault allegations

Today on Twitter Video claims ISIS militants have beheaded American hostage Peter Kassig 19 related Tweets The Situation Room, Anne Bayefsky and more are tweeting about this. Bill Cosby's brief response to sexual assault allegations 4 related Tweets Washington Post, NBC News and more are tweeting about this. Work to collect wreckage of MH17 begins four months after plane was downed 3 related Tweets Fox News, Yahoo News and more are tweeting about this. Popular in Photography 6020 related Tweets David West, Carole Thompson and more are tweeting about this. Trending in Sports 14989 related Tweets NBA, ESPNTennis and more are tweeting about this. Popular in Fashion 13291 related Tweets opening ceremony, MTV Style and more are tweeting about this. Not what you're looking for? Find more Tweets by checking out Twitter's "Discover" timeline on mobile or web.   Explore Twitter   Email settings  | Opt-out | Help Twitter, Inc. 1355 Market Street, Suite 900 San Francisco, CA 94103