. >> reporter: attorney stephen cullen is an expert in fighting international custody battles. >> if we went over there -- >> reporter: he's taken on shannon's case for free because he says even the united states government isn't helping. >> and it's horrible to have to admit to michael we've all failed him. the system has failed him. the legal system's failed him. we've all failed him because nothing has happened to get his children back. >> reporter: it is an international nightmare that began with a most american of love stories. in 1995 michael shannon was a computer specialist in chicago when his best friend invited him to a company softball game. the company was the engineering giant bechtel, and on that softball field he met a bechtel employee, nermeen khalifa, and fell in love. >> she was in your eyes american. >> americanized. yeah. i didn't find out until three months after we were dating that her father was born in cairo. >> reporter: her egyptian father was an extremely wealthy and powerful businessman who made sure his daughters, including nermeen, were born u.s. citizen