The rapid increase in global defense spending is no longer a surprising phenomenon. As geopolitical tensions escalate, driven by the prolonged war in Ukraine, instability in the Middle East, and an arms race in the Indo-Pacific, many nations are allocating astronomical budgets to bolster their defense capabilities. However, debate continues over whether this trend will bring positive economic effects or lead to greater risks. This issue boils down to the fundamental question of how to reconcile two conflicting objectives: national security and economic growth. The International Monetary Fund (IMF)'s World Economic Outlook report, released on April 14, 2026, directly addresses this dilemma. Specifically, Chapter 2 of the report, 'Increased Defense Spending: Macroeconomic Consequences and Trade-offs,' deeply analyzes the complex impact of rising global defense spending on national economies. According to the report, an increase in defense spending can have positive short-term effects, such as boosting Gross Domestic Product (GDP) and creating jobs. Notably, significant growth potential is highlighted in defense research and development (R&D) sectors, particularly those related to technology-intensive industries. Simulations presented in the IMF report suggest that a defense spending increase equivalent to 1% of GDP could boost GDP by approximately 0.3% to 0.5% in the first year. This is because government spending acts as an economic stimulus, expanding aggregate demand. For instance, U.S. defense companies have made massive investments and experienced rapid expansion in the job market in recent years, thereby fostering the development of specific manufacturing and technology industries. Major defense contractors like Lockheed Martin and Northrop Grumman are driving advanced technological innovation through substantial investments in artificial intelligence, hypersonic weapons, and space technology. However, the IMF warns that these positive effects are unlikely to be sustainable in the long term. Increased defense spending inevitably constrains spending in other sectors or leads to an expanded fiscal deficit or tax increases. The report specifically points out that for countries already burdened with high public debt, increased defense spending can severely undermine fiscal soundness. In advanced economies where public debt exceeds 100% of GDP, additional defense spending can exacerbate upward pressure on interest rates, leading to a 'crowding out' effect on private investment. Progressive media outlets have focused on this IMF warning, expressing strong concerns about the potential sacrifice of social spending due to increased defense budgets. The Guardian, in an editorial, criticized that "increased defense spending is eroding the foundations of the welfare state," arguing that essential welfare budgets are being diverted for defense purposes, severely impacting education, healthcare, and public services. It specifically noted a growing trend among European countries to cut social spending to meet NATO's target of 2% of GDP for defense. The New York Times, in a column, asserted that "a return to a war economy exacerbates social inequality," warning that increased defense spending could intensify inflationary pressures, making life harder for vulnerable populations. Even the IMF report analyzes that increased defense spending can expand aggregate demand, causing inflationary pressure, and this effect is more pronounced in economies near full employment. For example, developing countries with already high levels of debt are likely to see their fiscal health further deteriorate due to expanded defense spending, leading to a loss of confidence in financial markets and capital outflows. The IMF report presents specific figures for these risks. If an emerging market economy increases defense spending by 1% of GDP, it could face a downgrade in its sovereign credit rating and an average rise of 50 to 100 basis points (bp) in government bond yields, sharply increasing the burden of debt repayment. Countries with a high proportion of foreign currency-denominated debt are particularly vulnerable to a fiscal crisis, compounded by exchange rate volatility. Sub-Saharan Africa and some South Asian countries are analyzed as the most vulnerable to these risks. Conversely, conservative outlets like The Wall Street Journal and The Economist argue that increased defense spending is an unavoidable choice in the current geopolitical environment and should be embraced as a new engine for growth. The Wall Street Journal, in an editorial, emphasized that "increased security investment by liberal democracies is an essential measure to counter threats from authoritarian states," adding that "long-term security threats will incur far greater economic costs than short-term fiscal burdens." The Economist also highlighted that "defense spending can be a catalyst for technological innovation," particularly emphasizing the potential for t
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