Vyacheslav —, Soviet political leader after whom the — cocktail bomb, is named (7)
I believe the answer is:
molotov
(Other definitions for molotov that I've seen before include "An explosive cocktail" , "Soviet statesman (with a liking for cocktails?), d. 1986" , "Russian of cocktail fame" , "Soviet statesman - cocktail which explodes!" , "Russian statesman" .)