Ambassador Caroline Kennedy was singled out by the State Department's watchdog for using a personal email account to conduct official business. Kennedy, who has served as the U.S. ambassador to Japan since 2013, "used personal email accounts to send and receive messages containing official business," according to a State Department inspector general report made public Tuesday. Other senior embassy staff also used personal email accounts to handle government communications, occasionally transmitting information marked "sensitive but unclassified" on commercial accounts ... The embassy in Tokyo has no records management policy, nor does it enforce federal regulations that dictate how federal records...