New leader Andry Rajoelina has asserted control as the South African Development Community threatens to suspend Madagascar.
Zimbabwe's peace process is near collapse, amid accusations of guerrilla training camps and abductions of opposition party members.
An ordained preacher and rebel group commander, Gen. Laurent Nkunda is threatening to draw other nations into a war in eastern Congo.
Leaders from Southern Africa began emergency talks in Swaziland on Monday.
Zimbabwe follows Kenya's path. Will international donors be as supportive?
Mugabe and Tsvangirai agreed Monday to a deal that splits the government, but keeps the military under Mugabe.