Like all other CPSU republican branches, The CPU was committed, in accordance to the party statute, adhered to Marxist–Leninist ideology based on the writings of Vladimir Lenin and Karl Marx, and formalized under Joseph Stalin. The party had pursued state socialism, under which all industries were nationalized and a command economy was introduced. Prior to the adoption of central planning in 1929, Lenin had introduced a mixed economy, commonly referred to as the New Economic Policy, in the 1920s, which allowed to introduce certain capitalist elements in the Soviet economy. This lasted until 26 August 1991 when the Verkhovna Rada (Ukrainian parliament) suspended and on 30 August 1991 prohibited the Communist Party of Ukraine based on the fact that "the leadership of the Communist Party of Ukraine in its actions supported the coup d'état" [in Moscow]. Based on parliamentary faction of the Communist Party following its 1991 prohibition, there was created the Socialist Party of Ukraine. On efforts of some other communist cells across Ukraine that did not join the Socialist Party, in 1993 in Donetsk was re-established the Communist Party of Ukraine as a political party of independent Ukraine, while joining the Union of Communist Parties – Communist Party of the Soviet Union out of Moscow. Some members who joined Socialist Party, after re-establishing of the Communist Party, joined the new political entity among which the most notable was Adam Martyniuk.