Beyond the family, there are a few other characters, and rather more are referred to.  In order of appearance:

                          Boris  The Soviet Union

                         Nikko  Japan

                     Winston  United Kingdom

               Ira O’Braen  Occupied then democratic Iran. 

                     Mr. O’B  Saudi Arabia

                    Heinrich  West Germany

                           Jude  Israel

               Pal O’Bryon  Palestine

                         Indira  India

                   Françoise  France

                    Mrs Kim  South Korea

                      Mr Kim  North Korea

                       Chiang  China

           Percy O’Braen  Iran under the Shah

           Syrita O’Bryon  Syria

                              Ho  Vietnam

                   Consuela  Mexico           

       Consuela’s uncle  Cuba

                        Stacey  East Germany

             The Foreman  US intelligence

                          Egan  Egypt

   Consuela’s teacher  Chile under Allende

         Father O’Braen  Iran under the Ayatollahs

           Tariq O’Bryon  Iraq

              Nick Aragua  Nicaragua

             Stan O’Bryon  Afghanistan

                       Nelson  South Africa

                          Olga  Russia

                 Al O’Bryon  Al Qaeda

            Yemi O’Bryon  Yemen

         Carter O’Bryon  Qatar

           Libby O’Bryon  Libya