Part 4: When Anna and Vronsky continue seeing each other, Karenin consults with a lawyer about obtaining a divorce. During the time period, a divorce in Russia could only be requested by the innocent party in an affair and required either that the guilty party confessed or that the guilty party be discovered in the act of adultery. Karenin forces Anna to hand over some of Vronsky's love letters, which the lawyer deems insufficient as proof of the affair. Stiva and Dolly argue against Karenin's drive for a divorce. Anna Karenina is a novel by the Russian author Leo Tolstoy, first published in book form in 1878. Many writers consider Anna Karenina the greatest work of literature ever, and Tolstoy himself called it his first true novel. It was initially released in serial installments from 1873 to 1877 in the periodical The Russian Messenger.