Very dependent on US and European traveller(of course)
check a website call Africa online for news and maybe some info
Democracy now( us news site) and look for in thier archives.
You probably know that the political philosophy started as a bit of Marxism and later changed.
The best outside source now living in Zimbabwe I can recomend is Horace Cambell, his web site is
Horace G. Campbell is Professor of African American Studies and Political Science at Syracuse University in Syracuse New York. He teaches courses on African Politics (AAS 371/PSC 341), African International Relations (AAS 372/PSC 342), Militarism and Transformation in Southern Africa (AAS/PSC 731) Introduction to Pan Africanism (AAS 312) and The Caribbean Society since Independence (AAS 202).