Under the influence of gangs operating out of Nigeria, banditry is spreading in southwestern Niger. Along a border strip stretching between the Nigerien towns of Maradi and Dogondoutchi (or Doutchi), armed bandits have stolen entire herds and kidnapped hundreds of villagers. Many of the marauders are driven by greed, but others – in particular nomads whose pastoral livelihoods are imperilled by farmland expansion – take up arms to defend their families and property or to avenge injustices. In reaction, sedentary border zone residents have been forming fledgling self-defence groups. The insecurity risks creating the conditions for an insurrection that jihadists could exploit. The Nigerien authorities are mobilising their security apparatus to respond to the new threats. They should also redress grievances of herders impoverished by the pastoral crisis, reducing their incentive to take up arms, while pursuing intercommunal dialogue, monitoring self-defence groups and disarming bandits who pose a particular danger. The expansion of agricultural land greatly reduces the space available for livestock to graze, leading to pastoralists’ progressive impoverishment and sparking conflict between them and other land users, especially crop farmers. Many herders have come to see joining the bandits as a way of saving their livelihoods and protecting themselves from cattle rustling, as well as sometimes reaching a position of power. An armed insurrection against the state is becoming a real danger amid the communal violence, as the region is increasingly arousing the interest of jihadist groups from the Sahel and north-eastern Nigeria. The close link between jihadists and bandits is already evident elsewhere in the Sahel.