John Sweeney, a prominent British investigative journalist who has long covered Russian President Vladimir Putin, wrote in his new book that he feels the leader looks "seriously ill" with puffy cheeks that make him resemble a hamster. In his forthcoming book (out July 21), Killer in the Kremlin, Sweeney described changes he has noticed in Putin's demeanor and physical appearance that he said scare him. He theorized the use of steroids for Putin's changes, noting the president could have started taking the medication years ago to treat a back injury sustained after falling off a horse. According to Sweeney, this...