was there any allegations against him?
In 2006, the Ukrainian Parliament declared it to be such, and in 2010 a Ukrainian court posthumously convicted Stalin, Lazar Kaganovich, Stanislav Kosior, and other Soviet leaders of genocide.
Joseph Stalin
Historians continue to debate whether or not the 1932–33 Ukrainian famine—known in Ukraine as the Holodomor—should be called a genocide. Twenty six countries officially recognise it under the legal definition of genocide. In 2006, the Ukrainian Parliament declared it to be such, and in 2010 a Ukrainian court posthumously convicted Stalin, Lazar Kaganovich, Stanislav Kosior, and other Soviet leaders of genocide. Popular among some Ukrainian nationalists is the idea that Stalin consciously organised the famine to suppress national desires among the Ukrainian people. This interpretation has been rejected by more recent historical studies. These have articulated the view that—while Stalin's policies contributed significantly to the high mortality rate—there is no evidence that Stalin or the Soviet government consciously engineered the famine. The idea that this was a targeted attack on the Ukrainians is complicated by the widespread suffering that also affected other Soviet peoples in the 
who was the ruthless dictator who was intent on spreading communism in the soviet union and abroad Joseph Vissarionovich Stalin whom did he succeed? Vladimir Lenin was the former person the editor of any magazine or something like that? Yes, he was an editor for a daily newspaper "Pravda" ("Truth") did he sign any pact with germany? Yes, They signed the Molotov-Ribbentrop pact with Germany and what was that about? It was a non-aggression pact between Nazi Germany and the Soviet Union that enabled those two powers to partition Poland between them.
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Joseph Stalin [SEP] Death toll and allegations of genocide
With a high number of excess deaths occurring under his rule, Stalin has been labeled "one of the most notorious figures in history". These deaths occurred as a result of collectivisation, famine, terror campaigns, disease, war and mortality rates in the Gulag. As the majority of excess deaths under Stalin were not direct killings, the exact number of victims of Stalinism is difficult to calculate due to lack of consensus among scholars on which deaths can be attributed to the regime. Official records reveal 799,455 documented executions in the Soviet Union between 1921 and 1953; 681,692 of these were carried out between 1937 and 1938, the years of the Great Purge.