The United States use embargoes as a tool of foreign policy because they are peaceful means of dealing with difficult situations without the use of warfare. Embargo is an economic sanction imposed on an enemy nation by refusing to trade with it and to put pressure on the other nation. The lack of trade could weaken the enemy nation's economy and force it to give in to the demands of the United States. Another form of embargo involves the restriction of trade of military goods and arms with another country.