The United Nations has only four purposes stated in the UN Charter of 1945. These purposes focus mainly on the maintenance of world peace and security, on the harmonious relationship among nations, as well as on having cooperation in eliminating international problems and issues, and above all, be the center on achieving the first three purposes.
To recap, self-interest and competition are very important economic forces. Self-interest is the motivator of economic activity. Competition is the regulator of economic activity. Together they form what Adam Smith called the invisible hand, which guides resources to their most valued use.
The Executive branch must receive approval from "the Senate" when appointing heads of executive departments, ambassadors, and Federal Court Judges, since this is one of the most important examples of the system of "checks and balances" that exists in the US.
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By article 25 of the Treaty of Berlin, 1878, Austria-Hungary was permitted to occupy and administer Bosnia and Herzegovina. The crisis in 1908-1909 sprang from the fact that Serbia believed that she must prevent the consummation of annexation by Austria-Hungary or give up permanently her long-cherished hopes.