Upvote:1
It seems that Bordiga may indeed have expressed that sentiment at the Sixth Enlarged Executive Committee Plenum of the Comintern in Moscow in 1926.
In Loren Goldner's paper, Amadeo Bordiga, the Agrarian Question and the International Revolutionary Movement, published in Critique: Journal of Socialist Theory, 1995 (which may be the paper that you were thinking of) she says:
In his final confrontation with Stalin in Moscow in 1926, Bordiga proposed that all the Communist Parties of the world should jointly rule the Soviet Union, as a demonstration of the supra-national reality of the workersβ movement. This proposal was, needless to say, coolly received by Stalin and his friends.
A footnote notes that:
This intervention was made at the Sixth Enlarged Executive Committee Plenum of the Comintern in 1926.