The member states of NATO are: Albania, Belgium, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Estonia, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Lithuania, Luxembourg, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Turkey, United Kingdom, United States.

In the order of joining NATO:

1949 – Belgium, Denmark, France, Iceland, Italy, Luxembourg,  Netherlands, Norway, Portugal,  United Kingdom, United States.

1952 – Greece, Turkey

1955 - Germany

1982 – Spain

1999 – Czech Republic, Hungary, Poland

2004 – Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia, Slovenia

2009 – Albania, Croatia

NATO partner countries are:

Armenia, Austria, Azerbaijan, Belarus, Bosnia and Herzegovina, Finland, Former Yugoslav Republic of Macedonia, Georgia, Ireland, Kazakhstan, Kyrghyz Republic, Malta, The Republic of Moldova, Montenegro, Russia, Serbia, Sweden, Switzerland, Tajikistan, Turkmenistan, Ukraine, Uzbekistan.