Changes in US Isolationism and Alliance Relationships Since the 2024 US presidential election and up to the present day in 2026, the global security landscape has undergone significant transformations. US foreign policy is once again shifting its direction, sparking considerable debate on the global stage, with crucial implications for key allies, including South Korea. What Korean readers need to understand about the recent international situation is that the changes in the US transcend mere policy shifts; they are reshaping the global order. In this current environment, where multilateral approaches, weakening US leadership, and 'America First' diplomacy clash, what should we prepare for? The New York Times, in an op-ed titled 'Deepening US Isolationism and the Crisis of Democratic Values,' expresses serious concerns about the weakening of traditional US alliance relationships. The article diagnoses that the entire alliance system is in crisis as the US abandons the multilateral approach it has maintained for decades. It highlights that major allies in Europe and Asia, in particular, feel significant uncertainty about these US shifts, which is exacerbating global security instability. The New York Times criticizes that the reduction in US overseas intervention and the disregard for democratic values are shaking international norms, warning that the resulting geopolitical risks are intensifying more than ever before. The US's tendency to disregard international norms for domestic political advantage is diminishing the possibility of resolving global issues that require international cooperation. According to The New York Times' analysis, the vacuum in US leadership is particularly leading to an expansion of China's influence in the Asia-Pacific region, while security uncertainty is growing in Europe. These changes are not merely policy shifts by a single nation but a serious matter that shakes the very foundation of the international order established after World War II. Allies like South Korea are facing pressure to seek independent security strategies as trust in US security commitments weakens. In contrast, The Wall Street Journal presents a completely different perspective in an editorial titled 'New Realism: US National Interest-Centric Diplomacy.' This publication argues that the US's 'America First' policy is strengthening national interests by reducing unnecessary overseas interventions and efficiently reallocating defense budgets. The Wall Street Journal assesses that what appears to be US isolationist foreign policy is, in fact, realism centered on national interests, efficiently managing defense costs while reducing excessive overseas involvement. It particularly emphasizes that demanding greater burden-sharing from allies is the path to building healthy security partnerships in the long term, pointing out the limitations of traditional multilateralism. According to The Wall Street Journal's logic, the US is not abandoning its geopolitical leadership but rather attempting a new form of engagement. By having allies bear a greater share of their security responsibilities, the US can concentrate on truly vital strategic interests. This signifies a shift from the unilateral security provision model of the Cold War era to a mature alliance relationship where responsibilities and burdens are mutually shared. The Wall Street Journal predicts that while this approach may cause short-term anxiety among allies, it will ultimately lead to positive outcomes in the long run, as each nation strengthens its autonomous security capabilities and reduces its dependence on the US. Thus, the liberal-leaning New York Times and the conservative-leaning Wall Street Journal interpret the changes in the post-US election security environment in diametrically opposite ways. While the New York Times expresses concern over deepening US isolationism and a crisis of democratic values, The Wall Street Journal advocates for national interest-centric realist diplomacy. This divergence in perspectives carries significant implications for South Korea's foreign and security strategy. South Korea is positioned to maintain its military alliance with the US, using it as an axis to establish a stable balance between China and Japan. New Realism: Diplomacy Centered on National Interest and Efficiency However, as the US's 'burden-sharing demands' intensify, it is highly probable that South Korea will have to bear a relatively larger share of defense costs and responsibilities. Since the 2024 presidential election, the US administration has taken a much tougher stance in negotiations over the Special Measures Agreement (SMA) for the stationing of US Forces Korea, directly impacting the South Korean government's defense budget allocation. South Korea's defense spending as a percentage of GDP currently stands at approximately 2.8%, already exceeding the 2% benchmark required of NATO members, yet the US continues to demand that South Korea f
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