<prompt> Nyorai mberi kweiyi ndima - Kovalyov ave achitsoropodza pachena mafambiro ehutongi muhurumende dzaBoris Yeltsin naVladimir Putin. Muna 1996, akasiya basa semukuru wekomisheni yemutungamiri wenyika Yeltsin yekodzero dzevanhu, mushure mekuburitsa tsamba yakavhurika kuna Yeltsin, uko Kovalyov akapomera mutungamiri kuti arege nheyo dzedemokrasi. Muna 2002, akaronga komisheni yevoruzhinji kuti iongorore kuputika kwemabhawa eMoscow muna 1999  <response>: Kovalyov Commission, iyo yakaitwa kuti isashanda pashure pokunge imwe yenhengo dzayo, Sergei Yushenkov, yapondwa, imwe nhengo, Yuri Shchekochikhin, anonzi akaiswa chepfu ne thallium, uye gweta rayo uye muongorori, Mikhail Trepashkin, vakasungwa. 