WRONG, "President Salva Kiir of South Sudan" was the answer.
Next Question:

Who are these two former-kinda-commie dudes?
  1. President Raul Castro of Cuba & Prime Minister Medvedev of Russia
  2. Cuban President Fidel Castro and Russian Prime Minister Dmitry Medvedev
  3. Nicaraguan President Daniel Ortega and Russian Prime Minister Dmitry Medvedev
  4. Bolivian President Evo Morales and Russian President Dmitry Medvedev
  5. Cuban President Hugo Chavez and Russian President Vladimir Putin