Mystery/Thriller Reading Friends discussion

Noah Stark always dreamed of moving to Prague. After twenty years service in the French Foreign Legion, he finally does. He should be living the dream, but he can't stay sober, his gambling is out of control and he's running out of money: fast. Then a deal comes his way that's too good to be true. By the time he learns that he's sold the wrong stuff to the wrong people there's no going back; his girlfriend has disappeared and he's running for his life. When he discovers that she's in the hands of the CIA, he agrees to work for them by baiting a trap for a Pakistani scientist. Then his aircraft is intercepted en-route to Iran. Thrown into jail, Noah escapes and returns to Prague to seek revenge.