The refusal of Poland to allow Soviet troops to pass through its territory in 1939 was a mistake by the Polish authorities. The USSR could not wait until the German troops appeared on the Soviet borders and started a war against the Soviet Union from the surroundings of Minsk. Thus, if Poland realised a rational policy (based on its national interests), it would have been treated differently by the Soviet Union.
This message is consistent with a number of recurring pro-Kremlin manipulative narratives about the West's decline and imminent collapse, Western disregard for Ukraine, and about the coup in Ukraine in 2014.
It is a conspiracy that the West attempted to "sell" Ukraine to Russia under unclear terms. Ukraine's sovereignty and territorial integrity are respected by Western countries but were violated by Russia in 2014.
There was no coup d’état in Ukraine in 2014 either. The spontaneous onset of the Euromaidan protests was a reaction by numerous segments of the Ukrainian population to former President Yanukovych’s violent dispersal of peaceful student protests against Yanukovych's sudden decision to withdraw from the Association Agreement with the European Union in November 2013. See the full debunk here.
See earlier disinformation cases on Russia's relationship with international organisations alleging that the Council of Europe will die without Russia's membership, and that the Council of Europe is Russophobic and that the rulings of the European Court of Human Rights are anti-Russian.