The American detained in Russia has four passports. That could help him – or hurt him.

Since Russia accused U.S. citizen Paul Whelan of espionage and detained him last week, curious details about the 48-year-old’s personal life have continued to trickle out. He was discharged from the U.S. Marine Corps in 2008 for bad conduct. He has dozens of Russian friends on the Russian social media site Vkontakte.