Minister of International Relations and Cooperation Ronald Lamola says South Africa cannot manage the pressures of irregular migration alone.  Calling for continent-wide dialogue to address Migration challenges. Lamola says more than 80 percent of African migration takes place within the continent. He was speaking at the Africa and African Diaspora Conference at Birchwood Hotel in Boksburg. The conference is expected to discuss global challenges and ways to strengthen relations between Africa and its diaspora. Peace and security, global solidarity and economic development are also expected to feature prominently in the discussions.