This play, by the winner of a Nobel Prize for Literature, asks: 'On the authority of what gods' the white aliens rupture the world. It puts exciting political theatre back on the agenda... a masterpiece of 20th century drama Guardian A transfixing work of modern world drama Independent clearly a masterpiece... he achieves the full impact of Greek tragedy Irving Wardle, Independent on Sunday the action of the play is as inevitable and eloquent as in Antigone: a clash of values and cultures so fundamental that tragedy issues: a tragedy for each individual, each tribe Michael Schmidt, Daily Telegraph