David Aaron was quoted in "Analysis: Beyond Yachts and Planes - U.S. Turns to Foreign Agent Laws to Curb Russian Influence,” an article in Reuters, regarding prosecutors also targeting Russian influence since the U.S. Department of Justice launched a task force to seize Russian oligarchs' assets.

Prosecutors in that period have charged five Russians with acting on the Kremlin's behalf without registering as foreign agents, as the Justice Department broadly ramps up enforcement of the Foreign Agents Registration Act (FARA) and a related law known by its code number, 951.

FARA and 951 let prosecutors go after broader activity - such as lobbying or running media campaigns - than espionage statutes, which focus on agents seeking classified or military information, experts said.

"The Russian playbook is so much bigger than that," said David, a former national security prosecutor.

Read the full article on Reuters.