Carrie blackmails al - Zahrani into arranging a meeting with Walker at Farragut Square .
The investigation into Walker leads Carrie and Saul to Mansour al - Zahrani ( Ramsey Faragallah ) , a Saudi diplomat who acts as Nazir 's intermediary .
Carrie blackmails diplomat     into arranging a meeting with Walker at Farragut Square .
The investigation into Walker leads Carrie and Saul to Mansour al - Zahrani ( Ramsey Faragallah ) , a Saudi diplomat who acts as Nazir 's intermediary .