Group of 5 (G-5)
established - 22 September 1985
aim - the five major non-Communist economic powers
members - (5) France, Germany, Japan, UK, US
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Group of 6 (G-6)
Note - not to be confused with the Big Six
established - 22 May 1984
aim - seeks to achieve nuclear disarmament
members - (6) Argentina, Greece, India, Mexico, Sweden, Tanzania