National liberators should follow the example of Guiseppe Garibaldi. Once he had made his country independent, he retired to a farm given by a grateful Italian government, grateful that he had liberated Italy from the Austro-Hungarian Empire, unified Italy, and did not seek power for himself. Just because you have the skills necessary to successfully fight your enemies, doesnt mean you have the political skills to run your country. Mugabe is a good example of this. There maybe are exceptions, but I cannot think of any.