 John Adams' "Nixon in China" (1985-7) features a surreal version of Madam Mao's "Red Detachment of Women", illuminating the ascendance of human values over the disillusionment of high politics in the meeting.In Bertolt Brecht's "The Caucasian Chalk Circle," a play is staged as a parable to villagers in the Soviet Union to justify the re-allocation of their farmland