[Homer_J_Simpson]

The captured German papers reveal . . . one of the best-kept secrets of the war: the Soviet Union’s help in providing ports on the Arctic, the Black Sea and the Pacific through which Germany could import badly needed raw materials otherwise shut off by the British blockade.

On November 10, 1939, Molotov even agreed to the Soviet government’s paying the freight charges on all such goods carried over the Russian railways. Refueling and repair facilities were provided German ships, including submarines, at the Arctic port of Teriberka, east of Murmansk – Molotov thought the latter port “was not isolated enough,” whereas Teriberka was “more suited because it was more remote and not visited by foreign ships.”

William L. Shirer, The Rise and Fall of the Third Reich

[Homer_J_Simpson]

Firing at Frontier – 2-4
The International Situation – 3
Incidents in European Conflict - 5

[PzLdr]

The Russians provided the services of one of their ice breakers in facilitating the passage of one of the German surface raiders later on.