War and Peace is an epic novel by the Russian author Leo Tolstoy. Set during the Napoleonic Wars, the work comprises both a fictional narrative and chapters in which Tolstoy discusses history and philosophy. An early version was published serially beginning in 1865, after which the entire book was rewritten and published in 1869. It is regarded, with Anna Karenina, as Tolstoy's finest literary achievement, and it remains an internationally praised classic of world literature.