Four stabbed on Amtrak train in Michigan

A man is seen in custody aboard an Amtrak train following a stabbing incident in Niles, Michigan December 5, 2014. REUTERS/Chris Maynard/Handout via Reuters

Pope Francis prays in Istanbul’s Blue Mosque

Pope Francis waves to journalists as he stands by Istanbul’s Grand Mufti Rahmi Yaran upon their arrival to the Blue Mosque in Istanbul on Saturday.