The Great Lakes region is increasingly on edge. Distrust is rife among Burundi, Rwanda and Uganda, all of which have connections to insurgents in the eastern DRC. President Tshisekedi’s emphasis on regional peacemaking deserves applause and his cooperation with Rwanda has delivered dividends in tackling Rwandan rebels. But these efforts should proceed alongside diplomacy aimed at stemming the Kigali Kampala rivalry. More broadly, Tshisekedi should rethink his idea of inviting the three neighbours to participate in military operations in the DRC. Instead, he should seek an agreement that entails, first, the DRC’s eastern neighbours pledging not to back armed groups in the DRC and, secondly, a verification mechanism for investigating allegations of such involvement. This political track should build on the Luanda initiative. Special Envoy Xia’s recent diplomacy means that the UN is well placed to back all this, in line with Secretary-General António Guterres’s pledges to emphasise preventive diplomacy. By upping their diplomatic involvement, the U.S., UK and France can also play useful roles.