FTP, name this tale of the aging revolutionary Nicolas Rubashov, written by Arthur Koestler.
Among the people betrayed by the protagonist were the idealistic young Richard and the union leader, Little Loewy.  He also arranged to leave the country on a mission when his lover, Arlova, was denounced for being critical of No. 1.  The conversations with the sympathetic Ivanov and his cell neighbor, #402, are interrupted by the interrogator Gleitkin who successfully breaks the protagonist before his execution.  FTP, name this tale of the aging revolutionary Nicolas Rubashov, written by Arthur Koestler.
Among the people betrayed by the protagonist were the idealistic young Richard and the union leader, Little Loewy.  
Darkness at Noon