Leading Kenyan lawyer and former Justice Minister Martha Karua has been blocked from entering Uganda and ordered to return home, according to the Uganda Law Society. Karua had just arrived at the Entebbe airport to join a team defending her Ugandan lawyer colleague Erias Lukwago, with whom they have been representing detained opposition leader Kizza Besigye, who is on trial for treason. Lukwago was himself charged with a treason-related offence last week , and his bail hearing had been due on