“…Measuring the weight, or power, of a country has been approached in several ways. One method has been to look for concrete power-attributes, or capabilities, which can be used as measures of countries' power (Sabrosky 1975, Knorr 1955. This approach has been criticized on grounds that (1) 'power' should be reserved for the ability of country A to modify the behavior of country B; (2) attributes, such as GNP and military spending, only provide certain tools or capabilities that can be converted into power, and do not represent power itself; (3) power, unlike these attributes, is variable across a limited domain and scope (Dahl 1970, p. 18); (4) the capabilities or power of a set of countries may not be additive when they form an alliance; (5) power is an extremely ambiguous, and perhaps superfluous, concept in social science analysis (Riker 1962(Riker , 1969.…”