The NATO Parliamentary Assembly (NATO-PA), originally called the North Atlantic Assembly (NAA), is an inter-parliamentary organization founded in 1955 in order to enable representatives of the parliaments of members of NATO to meet and discuss common security problems. Today it includes representatives of the legislative bodies of the 28 members of NATO as well as of 14 associated countries, of 4 Mediterranean associated countries and of observers from 7 other countries.
The NATO-PA comprises 257 members plus 66 parliamentarians who represent associated delegations. The total number of delegates taking part in the activities of the Assembly is approximately 360. Most of these parliamentarians are members of defence committees in their own countries. The chairmen and deputy chairmen of the Swiss Committees on Security Policy thus have the opportunity to meet their counterparts when they attend NATO-PA functions.