Complete the following sentence: 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.<unk> bombings of Russian apartment buildings in 1999 that claimed nearly 300 lives and provided the justification for a second Chechen War. ąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąą During testimony before the U.S. House of Representatives, Satter stated: