Pius Ncube, the outspoken Catholic archbishop of Bulawayo in southern Zimbabwe, has urged President Robert Mugabe to step down -- this as the country faces deepening political and economic woes. cube was launching a report titled 'Destructive Engagement: Violence, Mediation and Politics in Zimbabwe', published by the Solidarity Peace Trust. He chairs this church-based non-governmental organisation (NGO), which aims -- in part -- to further justice and peace in Zimbabwe.