Meet Russia’s real-life ‘Americans’ — spies hiding in plain sight

Ann Foley, a part-time real estate agent, lived a middle-class, all-American lifestyle with her husband, Don, and their two sons, in Cambridge, Mass., home of many of America’s most prestigious universities and think tanks.  But the likeable, friendly couple had a very secret life.  Ann was, in fact, Elena Vavilova, a deep-cover spy trained by...