– to western crops such as wheat. During the 2000 drought in northern Kenya, the price of changaa (a locally distilled alcohol) fell significantly and consumption seems to have increased as a result. This was a result of grain food aid inflows increasing the availability of low-cost inputs to the informal distilling industry. Natural resource overexploitation Recent research suggests that patterns of food aid distribution may inadvertently affect the natural environment, by changing consumption patterns and by inducing locational change in grazing and other activities. A pair of studies in Northern Kenya found that food aid distribution seems to induce greater spatial concentration of livestock around distribution points, causing localized rangeland degradation, and that food aid provided as whole grain requires more cooking, and thus more fuelwood, stimulating local deforestation. The welfare impacts of any food aid-induced changes in food prices are decidedly mixed, underscoring the reality that it is impossible to generate only positive intended effects from an international aid program. Ulterior agendas Aid is seldom given from motives of pure altruism; for instance it is often given as a means of supporting an ally in international politics. It may also be given with the intention of influencing the political process in the receiving nation. Whether one considers such aid helpful may depend on whether one agrees with the agenda being pursued by the donor nation in a particular case. During the conflict between communism and capitalism in the twentieth century, the champions of those ideologies – the Soviet Union and the United States – each used aid to influence the internal politics of other nations, and to support their weaker allies. Perhaps the most notable example was the Marshall Plan by which the United States, largely successfully, sought to pull European nations toward capitalism and away from communism. Aid to underdeveloped countries has sometimes been criticized as being more in the interest of the donor than the recipient, or even a form of neocolonialism. S.K.B'. Asante lists some specific motives a donor may have for giving aid: defence support, market expansion, foreign investment, missionary enterprise, cultural extension. In recent decades, aid by organizations such as the International Monetary Fund and the World Bank has been criticized as being primarily a tool used to open new areas up to global capitalists, and being only secondarily, if at all, concerned with the wellbeing of the people in the recipient countries.