Economic sanctions are commercial and financial penalties applied by one or more countries against a targeted country, group, or individual. Economic sanctions may include various forms of trade barriers, tariffs, and restrictions on financial transactions. Economic sanctions are not necessarily imposed because of economic circumstances—they may also be imposed for a variety of political, military, and social issues. Economic sanctions can be used for achieving domestic and international purposes.
Economic sanctions are used as a tool of foreign policy by many governments. Economic sanctions are usually imposed by a larger country upon a smaller country for one of two reasons – either the latter is a threat to the security of the former nation or that country treats its citizens unfairly. They can be used as a coercive measure for achieving particular policy goals related to trade or for humanitarian violations. Economic sanctions are used as an alternative weapon instead of going to war to achieve desired outcomes.
Some policy analysts believe imposing trade restrictions only serves to hurt ordinary people.
Regime change is the most frequent foreign policy objective of economic sanctions. There is controversy over the effectiveness of economic sanctions in their ability to achieve the stated purpose. Haufbauer et al. claimed that in their studies 34 percent of the cases were successful When Robert A. Pape reexamined their study, he claimed that only five of their forty so-called "successes" stood out, dropping their success rate to 4%.
It also affects the economy of the imposing country to some degree. If import restrictions were made, the consumers in the imposing country would have fewer choices of goods. If export restrictions were made or sanction prohibited businesses in the imposing country from doing business with the target country, the imposing country could lose markets and investment opportunities to competing countries.
suggests that the reason sanctions are popular is not that they are known to be effective, but "that there is nothing else between words and military action if you want to bring pressure upon a government".