LONDON (Reuters) - London's "young sluts" wreaked such havoc among U.S. troops during World War Two that the British government feared Anglo-American relations would suffer, files released Tuesday showed. Thousands of prostitutes and "good-time girls" were drawn to Piccadilly Circus and Leicester Square in search of young American men in uniform. They took advantage of blackouts, which plunged London into darkness during Nazi night air attacks, to evade the police. The government was so concerned by the problem that it asked the Metropolitan Police to write a report on it in 1942. The report described how prostitutes working in upmarket...