High Quality Content by WIKIPEDIA articles! The 2004 Istanbul summit was held in Istanbul, Turkey from June 28 to June 29, 2004. It was the 17th NATO summit in which NATO`s Heads of State and Governments met to make formal decisions about security topics. In general, the summit is seen as a continuation of the transformation process that began in the 2002 Prague summit, which hoped to create a shift from a Cold War alliance against Soviet aggression to a 21st century coalition against new and out-of-area security threats. The summit consisted of four meetings.