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].