In his book, "Darkness at Dawn", Satter charged that the Russian Federal Security Service (FSB) was responsible for the bombings of Russian apartment buildings in 1999 that claimed nearly 300 lives and provided the justification for a second Chechen War. He argued that this was part of a conspiracy to bring Putin to power as Boris Yeltsin was fading. During testimony before the U.S. House of Representatives, Satter stated: