Berezovsky made his fortune in Russia in the 1990s when the country went through privatization of state property[15] He profited from gaining control over various assets, including the country's main television channel, Channel One. In 1997 Forbes magazine estimated Berezovsky's wealth at US$3 billion.[16] He was at the height of his power in the later Yeltsin years, when he was deputy secretary of Russia's security council, a friend of Boris Yeltsin's influential daughter Tatyana, and a member of the Yeltsin "family" (inner circle).[17] Berezovsky helped fundUnity – the political party, which formed Vladimir Putin's parliamentary base,[18] and was elected to the Duma on Putin's slate.[19] However, following the Russian presidential election in March 2000, Berezovsky went into opposition a