The 2006 Riga summit or the 19th NATO Summit was a NATO summit held in Riga, Latvia from November 28 until November 29, 2006. The most important topics discussed were the War in Afghanistan and the future role and borders of the alliance. Further, the summit focused on the alliance's continued transformation, taking stock of what has been accomplished since the 2002 Prague Summit. NATO also committed itself to extend further membership invitations in the upcoming 2008 Bucharest Summit. This summit was the first NATO summit held on territory of a former USSR republic and coincided with CIS' 2006 Minsk Summit of November 28. Roads in the center of Riga were closed down and parking was not allowed at the airport or at several roads, out of fear for car bombs. About 9000 Latvian police officers and soldiers took care of the Summit's security, while more than 450 other airmen from seven European NATO countries were called upon to ensure a no-fly zone above the summit in an operation called Operation Peaceful Summit. This enhanced ongoing Baltic Air Policing activities with additional aircraft, communications and maintenance support.