Expanding NATO will overstretch the resources of its core members  NATO expansion can in the long term only lead to the overstretching of the organisation and thus the undermining of stability for the entirety of Europe. The credibility of the commitment of article V of the NATO Charter in which every member pledges to come to the defence of another has already been undermined by the inclusion of small countries that would be unable to defend themselves and are practically indefensible. [1] NATO runs the grave risk of becoming so large and diverse it resembles a political organisation rather than a military alliance. The military contribution of the new members would be by definition limited. Were these republics already capable of providing sufficient security to their borders, there would be no necessity for NATO membership. At the point where the NATO commitments become more declaratory than real, the security of every State including the new members is called into question. There are already worries, particularly from the United States, that the U.S. provides a free guarantee while Europe free rides, this is even more of a problem with smaller countries who cannot defend themselves even if they did spend NATOs agreed 2% of GDP on defence. [2] Thus NATO expansion might in fact assist any State eager for its own expansionism in Eastern Europe.  [1] The Economist, ‘Georgia’s prospects’, 19 October 2006,   [2] Haddick, Robert, ‘This Week at War: Moral Hazard at NATO’, ForeignPolicy.com, 17 June 2011,