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Their neighbors thought they were just ordinary U.S. residents, but secretly they were spies, sent by Russia's Foreign Intelligence Service to gather information on U.S. policies and programs. For years they thwarted detection, partly by hiding secret correspondence in seemingly innocent pictures posted on public websites. They encoded and decoded the dispatches using custommade software. But the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.