War and Peace is a 1946 230-minute opera in 13 scenes, plus an overture and an epigraph, by Sergei Prokofiev. Based on the 1869 novel War and Peace by Leo Tolstoy, its Russian libretto was prepared by the composer and Mira Mendelson. The first seven scenes are devoted to peace, the latter six, after the epigraph, to war.

English National Opera (ENO) is a British opera company based in London, resident at the London Coliseum in St Martin's Lane. It is one of the two principal opera companies in London, along with The Royal Opera. ENO's productions are sung in English.