Radical Islamist cleric Kaplan, dubbed the "Caliph of Cologne" sits in a dock at a high criminal court in Istanbul. Radical Islamist cleric Metin Kaplan, dubbed the "Caliph of Cologne" surrounded by Turkish gendarmes sits in a dock facing a high criminal court in Istanbul December 20, 2004. Kaplan who was extradited to Turkey from Germany on October 12, appeared in a Turkish court on Monday for the first time, accused of masterminding a failed 1998 plot to crash an airplane into the mausoleum of the founder of secular Turkey. Kaplan is expected to face treason charges for attempting to overthrow the constitutional order in Turkey with the force of arms. REUTERS/Fatih Saribas