On 25 July 1998, Berezovsky introduced Litvinenko to Vladimir Putin. He said: "Go see Putin. Make yourself known. See what a great guy we have installed, with your help." On the same day, Putin replaced Nikolay Kovalyov as the Director of the Federal Security Service, with help from Berezovsky. Litvinenko reported to Putin on corruption in the FSB, but Putin was unimpressed. Litvinenko said to his wife after the meeting: "I could see in his eyes that he hated me." Litvinenko said that he was doing an investigation of Uzbek drug barons who received protection from the FSB, and Putin tried to stall the investigation to save his reputation.