Organizers of three Taylor Swift concerts in Vienna said they had no choice but to cancel the concerts after officials said two men had been arrested and accused of planning attacks at major events like the Swift concerts. NBC News' Keir Simmons reports. » Subscribe to NBC News: » Watch more NBC video: NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features , , , Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows. Connect with NBC News Online! NBC News App: Breaking News Alerts:
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