To study international relations means to study the history of international relations, the theory, the practical application of these theories and the results after the practical application of the theory. Smith spoke about international relations and said that international relations are important not only for theory, but also for history, for understanding today's politics (Smith 2006). So when you study international relations, you need to understand the theory, but you need to know the history, because the history of a state has contributed to the how and why of a country's politics as it is Today. It is impossible to understand a complex issue such as the war between North and South Korea by studying theories of internal relations. There is a complicated history between the two countries which were influenced by other states which transformed the countries into what they are today. So, studying international relations means studying theories and history so that you can practically use your knowledge to understand or influence a situation. Two main theories in international relations are the theory of realism and the theory of liberalism. Both theories have a common goal: being able to deal with international situations involving state and non-state actors, but they both address the situation in very different ways. Realism theory believes that the state is the most important actor and that states and their actions in the international system are motivated by their own survival and self-interest. Realism theory asserts that international organizations such as businesses or non-governmental organizations and other transstate actors have little real influence. The theory of realism believes that ...... middle of paper ...... weapons. It has all the assets to become a target that the United States could invade to prevent weapons of mass destruction from falling into the hands of terrorists, as the United States has done in the past. However, we view Pakistan as an ally rather than an enemy. We support Pakistan and give it billions of dollars in aid, but we isolate countries like Iraq, Syria, North Korea and Iran and make them enemies, arguably making them more dangerous than they weren't. In the case of Pakistan, the United States is able to overlook all the problems with Pakistan and present different interpretations of the facts. This may be because Pakistan has helped the US in the past and the US wants to maintain a positive or as positive stance as possible so that we can maintain some allies in the Middle East for future attacks against terrorist organizations..