Karl-Theodor Maria Nikolaus Johann Jacob Philipp Franz Joseph Sylvester Buhl-Freiherr von und zu Guttenberg, known professionally as Karl-Theodor zu Guttenberg, is a German businessman, author, journalist, podcaster, and former politician of the Christian Social Union (CSU). He served as a member of the Bundestag from 2002 to 2011, as Secretary-General of the CSU from 2008 to 2009, as Federal Minister for Economics and Technology in 2009 and as Federal Minister of Defence from 2009 to 2011.