Trotsky wrote in his “Manifesto of the Fourth International on the Imperialist War and The Proletarian World Revolution” (May 1940):
Sinulat ni Trotsky sa kanyang “Manipesto ng Ika-Apat na Internasyonal Hinggil sa Imperyalistang Digmaan at Ang Pandaigdigang Proletaryong Rebolusyon” (Mayo 1940):