Anna Karenina is the tragic story of a married socialite and her affair with the affluent Count Vronsky. The story starts when she arrives in the midst of a family broken up by her brother's unbridled womanizing—something that prefigures her own later situation, though she would experience less tolerance by others. Vronsky is eager to marry her if she will agree to leave her husband Karenin, a senior government official, but she is vulnerable to the pressures of Russian social norms, the moral laws of the Russian Orthodox Church, her own insecurities, and Karenin's indecision. The novel explores a diverse range of topics throughout its approximately thousand pages. Some of these topics include an evaluation of the feudal system that existed in Russia at the time—politics, not only in the Russian government but also at the level of the individual characters and families, religion, morality, gender and social class.