How do you behave in a poker game with a genocidal murderer? General Mohammed Siad Barre of Somalia had a revolver lying beside his over¬flowing ashtray on the baize card table. Dictators bully and cheat, not only at cards. Field Marshal General Idi Amin Dada of Uganda, fleeing his overthrow, abandoned his mansion on Kololo Hill. Amin's mansion showed us his madness, his vanity, his love of the cartoon characters Mickey Mouse, Goofy, Popeye and Olive Oil, and his hypochondria - the bathroom contained more medicine than a chemist's shop. On their trips to African summitry, Iraq's Saddam Hussein and Libya's Muammar Gaddafi, worldly yet fanatical, were an enigma. Yasser Arafat and King Hassan of Morocco were diminutive men, but charming in meetings face-to-face. Arafat was full of bonhomie as he tapped the pistol on his belt.