美国在与伊朗的近期冲突中大量部署高成本防御系统，军事开支急剧攀升。美国国防部长Pete Hegseth估计过去五个月的战争成本已达375亿美元1。其中，防御导弹成为主要开支项目，单枚SM-3拦截弹的成本高达2800万美元1，美国在此期间可能使用了超过100枚该型导弹1。
美国防御成本的高企与伊朗武器的相对低廉形成鲜明对比。独立分析机构CSIS估计冲突初期前六天就耗资113亿美元1，其中导弹成本占总开支的主要部分，涵盖爱国者、THAAD等多种高端防御系统1。相比之下，伊朗Shahed攻击无人机的成本仅为2万至5万美元，Fateh-110导弹的估计成本则为数十万美元1。为应对日益严峻的成本压力和库存消耗，美军已开始采取选择性拦截策略1。此外，美国陆军与洛克希德·马丁公司签署了586亿美元的爱国者导弹合同1。
The United States has incurred substantial expenses in its military confrontation with Iran, driven largely by the deployment of advanced defensive systems with significant per-unit costs. Defense Secretary Pete Hegseth estimated the war costs over the past five months at $37.5 billion 1. Analysis suggests the U.S. military may have fired more than 100 SM-3 interceptor missiles, each valued at $28 million 1, with missiles accounting for a major portion of overall expenditure.
The Center for Strategic and International Studies (CSIS) estimated that the first six days of conflict consumed $11.3 billion 1, with missile expenses representing a substantial share of a projected $26 billion in total costs 1. The defensive arsenal employed included SM-3 systems, Patriot, and THAAD platforms 1. This defensive posture contrasts sharply with the cost-effectiveness of Iranian weaponry—Shahed attack drones cost between $20,000 and $50,000 each, while Fateh-110 missiles are estimated at hundreds of thousands of dollars 1. Facing both budgetary constraints and concerns over weapon stockpile depletion, the U.S. military has shifted toward selective interception strategies 1. The Army has signed a $58.6 billion contract with Lockheed Martin for Patriot missiles 1.
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