"Germany, who has latterly come to unite about 80 million Germans, who has brought certain neighboring states under her sway and who has strengthened her military might in many respects, has evidently become a dangerous competitor for the principal imperialist powers of Europe - Great Britain and France. They therefore declared war on Germany under the pretext of fulfilling their obligations to Poland. It is now clearer than ever how far the real aims of the governments of these powers are from the purpose of defending disintegrated Poland or Czechoslovakia.

"Events arising out of the Polish‑German War has revealed the internal insolvency and obvious impotence of the Polish state. Polish ruling circles have suffered bankruptcy. . . . Warsaw as the capital of the Polish state no longer exists. No one knows the whereabouts of the Polish Government. The population of Poland have been abandoned by their ill‑starred leaders to their fate. The Polish state and its government have virtually ceased to exist. In view of this‑state of affairs, treaties concluded between the Soviet Union and Poland have ceased to operate. A situation has arisen in Poland which demands of the Soviet‑Government especial concern for the security of its state. Poland has become a fertile field for any accidental and unexpected contingency that may create a menace to the Soviet Union. . . . Nor can it be demanded of the Soviet Government that it remain indifferent to the fate of its blood brothers, the Ukrainians and Byelorussians White Russians inhabiting Poland, who even formerly were without rights and who now have been abandoned entirely to their fate. The Soviet Government deems it its sacred duty to extend the hand of assistance to its brother Ukrainians and brother Byelorussians inhabiting Poland.

"At 4.45 a.m. on September 1, 1939, the tranquillity of daybreak in Western Poland was shattered by a deafening military thunderclap. Five German armies comprising more than 1.8 million men swept across the Polish borders, launched from ideally situated bridgeheads in Western Pomerania, East Prussia, Upper Silesia and German-controlled Slovakia. Almost as loud as the barrages of the German artillery were the roars of engines; the German advance was spearheaded by more than three thousand tanks and hundreds of armoured cars and personnel carriers. From the sky, Ju-87 dive-bombers shrieked down on the hastily mobilizing Poles, their precision bombs destroying bridges, roads and supply convoys, their terrifying sirens sowing panic among the defending forces. The aim was to avoid the protracted attrition of the last war by achieving rapid penetration of territory and swift, annihilating encirclements of enemy forces. With its devastating combination of artillery, infantry, armour and air power, this was precisely what the blitzkrieg made possible.