South Africa acted quickly Wednesday after becoming president of the UN Security Council, saying it will convene African heads of state on April 17 to discuss support for peace efforts of the African Union. Ambassador Dumisani Kumalo, whose country assumed the rotating council presidency in April, said leaders of the other countries on the 15-member council were also being invited. South African President Thabo Mbeki, who will preside over the council meeting at UN headquarters in New York, has begun sending out invitations to heads of state to take part in the debate aimed at raising resources to assist the AU's programmes in Africa, Kumalo said.