Trotskyism is a political ideology based on the ideas of Leon Trotsky, a key figure in the Russian Revolution. It emphasizes the theory of permanent revolution, which argues that socialist revolutions should occur continuously across the globe rather than being confined to one country. Trotskyists believe that a successful revolution in one nation can inspire and support revolutions in others. Trotskyism also criticizes the bureaucratic nature of the Soviet Union under Joseph Stalin, advocating for a more democratic and internationalist approach to socialism. Trotskyists often oppose the idea of socialism in one country, arguing that true socialism requires international solidarity and cooperation among workers worldwide.