Rwanda has chosen a symbolic location to commemorate the 15th anniversary of the genocide against the Tutsi minority and highlight "the bankruptcy of humanity" during the 1994 massacres.

Tuesday's national ceremony will take place in Nyanza, a hill in Kigali where thousands of people were slaughtered on April 11 after the Belgian UN contingent that had been protecting them pulled out.

Belgium had decided to pull its troops out after 10 commandos from the UN force were killed by forces from Rwanda's regular army