DENIS DUMO  SUDAN Suda's power-sharing government and several rebel groups on Saturday formalised a peace agreement aimed at resolving decades of conflict which left millions displaced and hundreds of thousands dead. Three major groups signed a preliminary deal in August - two factions from the western region of Darfur and one from the southern region - after months of talks hosted by South Sudan. Another powerful rebel group, the Sudan People's Liberation Movement-North led by Abdelaziz al-Hilu, which had not participated in initial peace negotiations, agreed last month to join new talks hosted by South Sudan. Dancers from Darfur and…