The World: Spies: Foot Soldiers in an Endless War

OUTSIDE London's Marlborough Street magistrates' court one morning last week, a throng of newsmen waited impatiently. The object of their interest, an ostensibly minor Soviet trade official named Oleg Lyalin, 34, failed to show up to answer the charges against him—"driving while unfit through drink." He was resting instead in a comfortable country house near London where, for the past several weeks, he had been giving British intelligence a complete rundown on local Soviet espionage operations. His revelations prompted the British government two weeks ago to carry out the most drastic action ever undertaken in the West against Soviet spies: the...