The ex-wife of the 29-year-old man suspected of killing 50 people in a Orlando nightclub early Sunday said that he was violent and mentally unstable and beat her repeatedly while they were married. The ex-wife said she met Omar Mateen online about eight years ago and decided to move to Florida and marry him. At first, the marriage was normal, she said, but then he became abusive. [Snip] After the couple split, a friend of Mateen's said the young man became steadily more religious. The friend, who spoke on the condition of anonymity, said Mateen several years ago went on...