Stephen Sackur is in Oslo to talk to two of the three joint winners of this year's Nobel Peace Prize. Oleksandra Matviichuk is the head of the Center for Civil Liberties in Ukraine. Yan Rachinsky is chairman of the human rights group Memorial in Russia. The third winner, pro-democracy activist Ales Bialiatski, is a political prisoner in Belarus. What can civil society activism achieve in the face of authoritarian aggression?

Image: Yan Rachinsky (L) and Oleksandra Matviichuk (R) (Credit: NTB/Haakon Mosvold Larsen via Reuters)