The 2016 North Atlantic Treaty Organization (NATO) Summit has started in which of the following cities?

The 2016 North Atlantic Treaty Organization (NATO) has started at the National Stadium in Warsaw, Poland from July 8. In the 2-day summit, the leaders of the 28 NATO Allies and many partner nations will deliberate and take decisions to increase the alliance’s security by strengthening its deterrence and defense and projecting stability beyond its borders. The issues such as continuing support for Afghan forces, defeating Islamic State militants on NATO’s southern flank and deterring Russian aggression on the alliance’s eastern flank will be discussed.