1-Sergei Tretyakov was a Russian spy who defected to the United States in October 2000. During his time in Russia, Tretyakov was a colonel in the Russian intelligence service (S.V.R.) and oversaw covert

2-In 1918, Sidney Gottlieb was born in New York under the name of Joseph Scheider. He received a PhD in chemistry from Caltech and became an expert on lethal poisons. In 1951, Gottlieb joined the CIA and