He was briefly held before being handed over to the embassy, following formal protocol, Russia's counterintelligence agency, the FSB, said earlier.

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The directive creates a four-person counterintelligence agency under a director with broad authority to determine which U.S. counterintelligence secrets -- whether they be in the hands of the U.S. government or in the private sector -- need to be protected from potential adversaries.

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The report also called for changes at the FBI, including the creation of a new National Security Service that would merge the agency's counterterrorism and counterintelligence divisions.

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