The political conditions, reasons, assessments and significance of the decision of the Soviet leadership to make the German-Soviet Non-Aggression Pact in 1939, the features of the Czechoslovak crisis, the Munich Agreement are considered; the Molotov-Ribbentrop Pact is evaluated as a normative basis for constructing the state-political map of the world on the eve of the Second World War; fundamental issues requiring ideological, political and historical understanding are considered; attention is paid to the activation of falsification of the history of the Second World War and the Great Patriotic War; the article shows that in the West, the falsification of history occupies a special place among the tools of manipulating the consciousness of modern society, there is a total distortion of history, which is becoming more and more intense in connection with the anniversaries of the be-ginning of the Great Patriotic War and the Victory of the Soviet people in the Great Patriotic War; history is increasingly rewritten, historical truth is sacrificed to the current political situation; political strategists of the West, argue that the Pact is the main cause of the Second World War; the blame for the unleashing of world bloodshed is laid on the USSR and Russia as its legal successor; attempts are made to devalue the sacrifices of the Soviet people made in the name of Victory in the liberation of Europe. It is necessary to counteract the falsification of history, there-fore the article pays special attention to the struggle for the truth of history, to the restoration of historical truth in respect of the past of Russia and international rela-tions. The authors document that the conclusions of the West about the role and significance of the USSR in the defeat of fascism, about the goals and results of the Second World War do not correspond to historical facts. It is necessary to continue comprehensive consideration of the military, political, ideological and legal situa-tion concerning the signing of the German-Soviet Non-Aggression Pact of August 23, 1939 and the Munich Agreement that preceded it.