Raza Jaffrey, Michael O'Keefe Raza Jaffrey, Michael O'Keefe

Homeland's cast refresh continues: The Showtime drama has added two more new faces to its fourth season.

Smash's Raza Jaffrey and Roseanne's Michael O'Keefe have signed on in recurring roles, according to The Hollywood Reporter. Jaffrey will play Aasar Khan, a decorated lieutenant-colonel in the Pakistan intelligence service. O'Keefe will play deputy station chief John Redmond who is stationed in Afghanistan and will clash with Carrie.

TV's 24 greatest action heroes

Jaffrey and O'Keefe's casting comes one week after Homeland announced Corey Stoll will be guest-starring as Sandy Bachman, the CIA Chief of Station in Pakistan (and O'Keefe's boss). Showtime also announced Laila Robins will be a series regular as Martha Boyd, the United States Ambassador to the Islamic Republic of Pakistan. Additionally, Suraj Sharma will appear in a "heavily recurring" role as a Pakistani medical student who crosses paths with Carrie.

Season 4 will take place in Islamabad and Kabul and is slated to begin production later this month in Cape Town, South Africa.

Homeland returns to Showtime this fall.

Every breath Brody takes: See why Damian Lewis has the hardest-working nostrils in Hollywood