Opponents in fear of a wave of political assassinations after death threats . Rumours of a ' hit list ' in wake of opposition leader Boris ##chenko 's murder . Close aide to exiled prime Mikhail Khodorkovsky declined a funeral invitation . Socialite - turned - politician Kseniya ##nko said ' You 're next ' at funeral .
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 .