This special issue seeks to move the scholarly conversation beyond notions of conflict-generated diasporas as simply agents of conflict or peace. The field is ripe to unpack the notion of context for diaspora mobilisation in International Relations, the focus and novelty of this special issue. Theorising in this volume goes beyond current prevalent thinking that contexts are host-states in which diasporas live, and original home-states to which they are transnationally connected. The emphasis here is that diasporas have linkages to different contexts, and that their embeddedness in these contexts -simultaneously or sequentially in time -either shapes their mobilizations or is shaped by them. The volume theorises about spatialities and temporalities of diaspora engagement: it emphasises spatial notions such as multi-sited embeddedness, positionality, and translocalism on the one side, and temporal notions such as critical junctures, transformative events, simultaneity, crises, and durability of conflicts on the other. This collection further adds new thematic areas to current scholarly inquiry, opening the discussion beyond interest in diaspora remittances, economic development, and extraterritorial voting. The authors take little-explored paths to examine diasporas as agents in transitional justice processes, contested sovereignty, and fragile and de facto states, as well as in civic and ethnic-based activism.