Goldman began to worry about the future of Spain's anarchism when the CNT-FAI joined a coalition government in 1937—against the core anarchist principle of abstaining from state structures—and, more distressingly, made repeated concessions to Communist forces in the name of uniting against fascism. She wrote that cooperating with Communists in Spain was "a denial of our comrades in Stalin's concentration camps".[149] Russia, meanwhile, refused to send weapons to anarchist forces, and disinformation campaigns were being waged against the anarchists across Europe and the US. Her faith in the movement unshaken, Goldman returned to London as an official representative of the CNT-FAI.[150]