Brazzaville, capital of the Republic of Congo, was undoubtedly the centre of ideas and the most radical revolutionary activism taking place in Central Africa between 1963 and 1975. The scene of the first successful anti-neocolonial popular uprising in August 1963 on the African continent after independence, revolutionary Brazzaville would save the Popular Movement for the Liberation of Angola (MPLA) from its expulsion from Leopoldville (Kinshasa), capital of the Democratic Republic of Congo, that same year. The young Congolese Revolution would embrace the cause of the Angolan anti-colonial struggle and offer the MPLA a refuge from which it would organise the relaunch of the anti-colonial armed struggle. But the Angolan nationalist movement would not escape to the turmoil which came to characterise Congolese politics. My contribution aims to illustrate the conditions of MPLA settlement in Brazzaville and the contours of its political and diplomatic activity and socialisation. Principally, it will demonstrate the complexity of the relationship between MPLA leaders and the Congolese revolutionary process while also analysing the sociological and existential dimensions of the relationship between Angolan exiles and the “Brazzavillois” Congolese masses.