As Mr Mugabe continues to flout international opinion, suppress democratic opposition to his regime, and reduce this once rich nation to abject poverty, some commentators are asking if it might not be desirable to remove this despot by means of military intervention.I leave it to others better qualified than I am to debate the legality in international law of such an action. And, of course, whether or not the United Nations would sanction military intervention is a big question. But leaving aside these enormous issues, is it militarily practicable to mount such an operation?Zimbabwe is bordered by Zambia in the north, Botswana in the west, Mozambique in the east and South Africa in the south. Only the last two have deep-water ports, of which Beira in Mozambique is the closest to Zimbabwe.