The All-Union Communist Party Bolsheviks (Всесоюзная Коммунистическая партия большевиков, ВКПБ, Vsesoyuznaya Kommunisticheskaya Partiya bol'shevikov, VKPb) is a Marxist-Leninist and anti-revisionist political party operating in Russia and other former Soviet states. It was founded in November 1991, and led by Nina Andreeva a university teacher who was well known for her 1988 letter 'I cannot give up my principles'. The VKPB has its origins in the 'Bolshevik Platform' of the CPSU.