War and Peace (pre-reform Russian: Война́ и миръ; post-reform Russian: Война́ и мир, translit. Voyná i mir ( vɐjˈna i ˈmjir) ) is a novel by the Russian author Leo Tolstoy, which is regarded as a central work of world literature and one of Tolstoy's finest literary achievements.\n\nBased on this passage, who wrote the classic novel war and peace?
Let's be accurate as possible and think first.
Leo Tolstoy
The relevant sentence in the passage is: War and Peace (pre-reform Russian: Война́ и миръ; post-reform Russian: Война́ и мир, translit.

Voyná i mir ( vɐjˈna i ˈmjir) ) is a novel by the Russian author Leo Tolstoy, which is regarded as a central work of world literature and one of Tolstoy's finest literary achievements.

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Thus, the answer is Leo Tolstoy