Opponents in fear of a wave of political assassinations after death threats . Rumours of a 'hit list ' in wake of opposition leader Boris Nemtsov 's murder . Close aide to exiled oligarch Mikhail Khodorkovsky sent a funeral wreath . Comment:
Opponents in fear of a wave of political assassinations after death threats . Rumours of a 'hit list ' in wake of opposition leader Boris Nemtsov 's murder . Close aide to exiled oligarch Mikhail Khodorkovsky sent a funeral wreath . Socialite-turned-politician Kseniya Sobchak warned 'You 're next ' at funeral .