 "It has been noted that less than 50% of ASEAN agreements are actually implemented, while ASEAN holds more than six hundred meetings annually".The head of the International Institute of Strategic Studies, Tim Huxley, cites the diverse political systems present in the grouping, including many young states, as a barrier to far-reaching co-operation beyond economics.He also asserts that, without an external threat to rally against after the Cold War ended, ASEAN has less successfully restrained its members and resolved such border disputes as those between Burma and Thailand or Indonesia and Malaysia.