Russia's opposition politician Boris Nemtsov is the latest in a list of Kremlin opponents who have been killed or died in suspicious circumstances in the past decade.
New Straits Times: Death cases involving Kremlin critics – who they are and how they died
A woman places a candle on February 28, 2015 in memory of Russian opposition leader Boris Nemtsov at the Solovetsky Stone, a monument to political prisoners, in St. Petersburg.
