Yesterday, Western governments announced that they had undergone a prisoner swap with Russia. From Russia’s side, 16 prisoners were freed, among them Wall Street Journal reporter Evan Gershkovich. From the West, eight prisoners were released from prisons in the U.S., Norway, Germany, Poland and Slovenia.

Among those released were a family who had been operating under deep cover as Argentine citizens. The cover was so deep, in fact, that it turns out the kids didn’t even know they were spies for the Russian government. Even more incredibly, they didn’t know they were Russian, which forced President Vladimir Putin to greet them in their native Spanish.