'... I would be interested in knowing why you came out against the United States of America in its stand in the Cuban blockade instead of criticizing the Soviet Union for sending those goods to Cube while all the time guaranteeing that they would never take such action. I am presently studying your philosophy in college now and can see no basis for this action on your part. ..'
Dear Mr Campbell,
... I criticised the United States because it threatened to sink Soviet ships on the high seas, knowing full well that such action would initiate general nuclear warfare.
The United States has no more right to determine the armoury in Cuba than the Soviet Union has in Turkey, Italy, Britain, or in any of the many other countries harbouring Amerian bases around the Cmmunist perimeter.
Source: Dear Bertrand Russell; a selection of his correspondence with the general public, 1950 - 1968. Allen & Unwin, 1969.)
More info.: https://russell-j.com/beginner/DBR2-17.HTM