Claire Bigg profiles Vladislav Surkov, the reclusive presidential aide, widely known as the Kremlin's "gray cardinal" and a close ally of Prime Minister Vladimir Putin.
Golnaz Esfandiari speaks to Amir Farshad Ebrahimi, a former member of one of Iran's hard-line pressure groups, Ansar-e Hizbullah, about the vigilante violence in Iran.
Emanuel Zeltser, an American lawyer who was released from a Belarusian jail after spending nearly a year behind bars on charges of industrial espionage, talks about his time in prison.
And Russian opposition leader Boris Nemtsov talks about Obama's Russia visit.
-- Luke Allnutt