Delineating the transition to socialism has been a major theoretical problem for Marxists. The debate over strategy and tactics has been played out in a number of countries. As in other less developed countries, debate in Chile took place over how to transform their country from dependent capitalism to socialism, and was similar to that which occurred in Russia over permanent revolution or in China during the 1970s. Despite this apparent similarity, the debate in Chile took a somewhat unusual form because pre-1973 Marxists in Chile opted to pursue the second route to socialism, the so-called via pacifica (or peaceful route) rather than the via armada or via insurreccional (insurrectionary route). This strategy was not common in less developed countries, where the struggle for the seizure of power most often took the form of guerrilla warfare as happened in China, Cuba, and Vietnam. For many observers, pre-1973 Chile, with its long parliamentary tradition, constituted perhaps the premier example of the application of the via pacifica to less developed countries. Despite basic agreement on the via pacifica, serious theoretical as well as personal and sectarian differences existed between the two largest left parties, the Partido Comunista (Communists, or PC) and the Partido Socialista (Socialists, or PS). The two parties clashed on a number of critical issues, both historically and during the three years of the Unidad Popular (UP) government. Their differences were grounded largely in divergent understandings of the path to socialism and the means to attain it. Differences arose over the limits of legality, the scope and speed of the transition process, the role of the working class and other classes (especially the petty bourgeoisie) during the transition process, and the role of