ISIS claims responsibility after 40 killed near Moscow

Princess Kate Middleton reveals she has cancer but leaves major questions unanswered. Plus, new footage into OutFront of the bloody terror attack in Russia which has left 40 dead and dozens more injured after gunman stormed a concert hall in Moscow. ISIS is claiming responsibility and Russia says the gunman are on the loose. Learn more about your ad choices. Visit podcastchoices.com/adchoices