SEOUL, May 9 (Yonhap) -- U.S. President George W. Bush is reading a North Korean defector's book revealing gruesome human rights abuses in the Stalinist country, according to a White House source contacted in Seoul over the weekend. "I am in the middle of reading 'the Aquariums of Pyongyang,'" the White House source quoted Bush as saying in a recent meeting with aides. The White House source, whose name is being withheld by the Yonhap News Agency for privacy, told a friend in Seoul that Bush "appeared to be very concerned" about the plight of the 23 million North...