The dynamics of changes in United States (US) foreign policy have always been an interesting and complex topic. US foreign policy is influenced by various factors, including changes in administration, global dynamics, as well as domestic issues. In recent years, we have witnessed a number of significant shifts in the US approach to international relations. First, the post-9/11 era introduced a militaristic approach, with a primary focus on global terrorism. This policy highlighted the invasions of Iraq and Afghanistan, which marked a major shift in foreign strategy. However, as time goes by, there is a realization that military conflict is not always an effective solution. Therefore, the new government began to move towards diplomacy and multilateral cooperation. Furthermore, China’s economic and military rise poses a real challenge to US dominance. US foreign strategy now focuses on strengthening alliances with Indo-Pacific countries, such as Japan and Australia. The concept of a free and open Indo-Pacific is the basis for policies to respond to China’s increasingly strong influence. Economic diplomacy is also a major focus, with an emphasis on fair trade and fighting unfair trade practices. One important element in foreign policy dynamics is climate change. The US, under the new administration, recommitted to the Paris agreement, making climate change a priority in international diplomacy. In addition, America also encourages cooperation in clean technology and renewable energy, recognizing that the climate crisis requires global collaboration. In the context of other global tensions, policy towards Russia and Iran has become increasingly complex. The firm approach towards Russia after the annexation of Crimea and intervention in Ukraine reflects the US’s attitude of not wanting to compromise on violations of other countries’ sovereignty. Meanwhile, relations with Iran focus on ongoing negotiations about its nuclear program, with an emphasis on diplomacy rather than military confrontation. Changes in US foreign policy are also determined by domestic political dynamics. Political instability often influences overseas priorities, where issues such as elections can divert attention from international issues. Partisan tensions within countries often create uncertainty about the direction foreign policy will take, thereby affecting US credibility in the eyes of international partners. Social media and information technology are also changing the way foreign policy is communicated and implemented. Fast and easily accessible information allows the wider public to engage in discourse on foreign policy, making it more transparent, but potentially increasing pressure on the government. In conclusion, the dynamics of changes in US foreign policy are a combination of many interacting factors. From a militaristic approach to multilateral diplomacy, from a focus on trade and strategic alliances to concern with global issues such as climate change, US foreign policy continues to evolve in the face of new challenges. This development not only affects the US, but also the whole world, considering the US’ strategic position in global politics.