Politics and markets have always been intertwined. Governments are motivated to intervene in markets to protect national economic interests, to solve problems of public commons and redress externalities and in some cases, to redistribute wealth within society according to political imperatives. On the international stage, governments often interfere in global markets to achieve foreign policy objectives or to manipulate the terms of exchange with other countries either to advance their own ability to accumulate wealth or to guard against undue advantages being reaped by other nations. Sometimes, governments intervene in the market out of anxiety with respect to the intentions of other countries.
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