Recently, the United States stated that it is currently unable to seize a third oil tanker allegedly involved in violating sanctions by transporting crude oil to Venezuela. This admission highlights the practical challenges Washington faces in enforcing its sanctions against Venezuela. The U.S. has previously seized two such tankers as part of its strategy to cut off foreign currency revenues to Nicolás Maduro’s government. However, legal and jurisdictional complexities—such as the vessel’s country of registration, flag state, or current location—have hindered similar enforcement actions against the third tanker.The globalized nature of international shipping allows many tankers to evade oversight through layered offshore ownership structures and frequent changes of flag states. Moreover, if the vessel is docked in a port of a country that does not recognize U.S. extraterritorial jurisdiction, or is sailing on the high seas without clear evidence of sanction violations, American authorities lack the legal basis to carry out a seizure. This underscores the limitations of unilateral sanctions in an interconnected world.Analysts note that while the U.S. seeks to extend the reach of its sanctions through ‘long-arm jurisdiction,’ the effectiveness of such measures diminishes without broader international cooperation and multilateral support. Moving forward, aligning allies’ positions and enhancing intelligence sharing and joint enforcement will be crucial for the U.S. to strengthen the impact of its sanctions regime.
近日，美国方面表示，目前暂无法扣押第三艘涉嫌违反制裁规定、向委内瑞拉运输石油的油轮。这一表态反映出美方在执行对委内瑞拉制裁措施过程中所面临的实际操作难题。此前，美国已成功扣押两艘相关油轮，并以此作为打击委内瑞拉马杜罗政府获取外汇收入的重要手段。然而，第三艘油轮因注册地、船旗国或所在海域管辖权等复杂因素，使得美方难以采取类似强制措施。国际航运体系高度全球化，许多油轮通过多层离岸公司注册、频繁更换船旗国等方式规避监管。此外，若该油轮当前停靠在不承认美国司法管辖权的国家港口，或航行于公海且无明确违法行为证据，美国执法机构便难以合法实施扣押。这凸显出单边制裁在全球化背景下的局限性。分析人士指出，尽管美国试图通过“长臂管辖”扩大其制裁效力，但在缺乏国际合作与多边机制支持的情况下，其行动效果将大打折扣。未来，如何协调盟友立场、强化情报共享与联合执法，将成为美国提升制裁执行力的关键。
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