The 10th Harvard Black Sea Security Program Regional Workshop took place in Istanbul, Turkey from October 2-6, 2011. Theevent was held in partnership with Kadir Has University, Ministry ofDefense of Turkey and withgenerous grant support from the Carnegie Corporation of New York and Black Sea Trust. The primary topic of discussion were security challenges in Black Seaand its greater region. The event was a follow-on to the eleventh annual Black SeaSecurity Program, which took place in April 2011.TheIstanbul conference was the tenth annual gathering of alumni and regional expertsaffiliated with Harvard’s Black Sea Security Program which takes place annuallyin April at the John F. Kennedy School of Government. Prior workshops took place in Yalta, Ukraine(2002); Baku, Azerbaijan (2003); Batumi, Georgia (2004); Chisinau, Moldova(2005); Bucharest, Romania (2006); Kiev, Ukraine (2007); Yerevan, Armenia(2008), Moscow, Russia (2009) and Sofia, Bulgaria (2010).