Konstantin "Costa" Ronin (Russian: Константин "Коста" Ронин; born 3 February 1979) is a Russian actor and cinematographer, best known for appearances in Red Dog, as Gregorovich on the SBS drama East West 101, as Oleg Igorevich Burov in the FX drama The Americans and as Yevgeny Gromov on Homeland. (Via Wikipedia)