Ardennes

АВП РФ. Ф. 059. Оп. 1. П. 325. Д. 2234. Л. 186–188.
Cipher telegram from Soviet Plenipotentiary Representative in Great Britain I. Maisky to the Soviet People’s Commissariat of Foreign Affairs about the military situation of Franco-British allies after the German breakthrough in the Ardennes
23 May 1940
Archive of Foreign Policy of the Russian Federation
Coll. 059, ser. 1, box 325, fold. 2234, ff. 186–188.

Certified copy