Guevarism holds the belief that Armed Struggle can trigger a Revolution wherever a Government doesn't have the favour of its Citizens.
Guevarism believes that the focoism principle of vanguardism by cadres of small, fast-moving paramilitary groups can provide a focus for popular discontent against a sitting regime, and thereby lead a general insurrection.
Ernesto Guevara did not count on a Leninist insurrection based on cities as had happened during the 1917 October Revolution, but on a popular uprisings which would gain strength in rural areas and would overtopple the regime: the vanguard guerrilla was supposed to bolster the population's morale, not to take control of the state apparatus by itself, without any exterior help.