Ключевые слова: 50th anniversary, addis ababa, africa, african union, african union commission, ato, au, auc, ban ki moon, ceremony, chairperson, conference complex, dessalegn, dlamini, ethiopia, golden jubilee, greet, hailemariam, may 25, nkosazana, oau, podium, prime minister, secretary general, united nations, zuma,