War and Peace ( Russian : Ð ' Ð 3\/4 Ð Ð 1\/2 Ð Ð Ð 1\/4 Ð Ñ ) is a famous novel written by Leo Tolstoy , a Russian writer . War and Peace ( , Pre-reform Russian : Â `` Ð ' Ð 3\/4 Ð Ð 1\/2 Ð Ð Ð 1\/4 Ð Ñ Ñ Â '' ) is a novel by the Russian author Leo Tolstoy , published in 1869 .