The Soviet Government deems it its sacred duty to extend the hand of assistance to its brother Ukrainians and White Russians inhabiting Poland.

Extracts from Molotov’s broadcast speech on the Soviet invasion of Poland (17 September 1939) Mirovoe Khoziaistvo, 1939, 9, p. 13. In Soviet Documents on Foreign Policy. Volume I: 1917-1941. Jane Tabrisky Degras (ed.) 1953, Oxford University Press. Pages 374-5