This article uses the city of Dar es Salaam as an urban lens for understanding the politics of FRELIMO in exile and the assassination of its first president, Eduardo Mondlane, in 1969. By adopting a multiarchival technique, these narratives can be broken down to a micropolitical level, shedding light on the distribution of agency in the confluence of superpower rivalry and decolonisation in the Third World. The splits within the liberation movement can be explained via the intersection of internal disagreements, Cold War dynamics, and relations with the Tanzanian state, within the context of Dar es Salaam’s cosmopolitan public sphere.