Message to F. Roosevelt (Correspondence Vol. 2, No. 80)

The behaviour of the Polish Government towards the U.S.S.R. of late is, in the view of the Soviet Government, completely abnormal and contrary to all the rules and standards governing relations between two allied states.
The anti-Soviet slander campaign launched by the German fascists in connection with the Polish officers whom they themselves murdered in the Smolensk area, in German-occupied territory, was immediately seized upon by the Sikorski Government and is being fanned in every way by the Polish official press. Far from countering the infamous fascist slander against the U.S.S.R., the Sikorski Government has not found it necessary even to address questions to the Soviet Government or to request information on the matter.
The Hitler authorities, having perpetrated a monstrous crime against the Polish officers, are now staging a farcical investigation, using for the purpose certain pro-fascist Polish elements picked by themselves in occupied Poland, where everything is under Hitler's heel and where no honest Pole can open his mouth.
Both the Sikorski and Hitler Governments have enlisted for the "investigation" the aid of the International Red Cross, which, under a terror regime of gallows and wholesale extermination of the civil population, is forced to take part in the investigation farce directed by Hitler. It is obvious that this "investigation," which, moreover, is being carried out behind the Soviet Government's back, cannot enjoy the confidence of anyone with a semblance of honesty.
The fact that the anti-Soviet campaign has been started simultaneously in the German and Polish press and follows identical lines is indubitable evidence of contact and collusion between Hitler - the Allies' enemy - and the Sikorski Government in this hostile campaign. At a time when the peoples of the Soviet Union are shedding their blood in a grim struggle against Hitler Germany and bending their energies to defeat the common foe of the freedom-loving democratic countries, the Sikorski Government is striking a treacherous blow at the Soviet Union to help Hitler tyranny.
These circumstances compel the Soviet Government to consider that the present Polish Government, having descended to collusion with the Hitler Government, has, in practice, severed its relations of alliance with the U.S.S.R. and adopted a hostile attitude to the Soviet Union. For those reasons the Soviet Government has decided to interrupt relations with that Government. I think it necessary to inform you of the foregoing, and I trust that the U.S. Government will appreciate the motives that necessitated this forced step on the part of the Soviet Government.

April 21, 1943