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Is anticipatory and pre-emptive use of force for self-defence permissible under Article 51 of the UN Charter ? Discuss.

This question was previously asked in
UPSC CSE 2025 (Prelims) CSAT Official Paper (25-May-2025)

Article 51 of the UN Charter recognizes the inherent right of individual or collective self-defence “if an armed attack occurs.” Traditionally, this has been understood to permit force only after an actual attack. However, contemporary threats such as terrorism and weapons of mass destruction have sparked debate on anticipatory and pre-emptive self-defence.

Anticipatory self-defence, invoked when an attack is imminent, finds some support in customary international law, notably the Caroline Incident, which required that the threat be “instant, overwhelming, leaving no choice of means, and no moment for deliberation.” In contrast, pre-emptive self-defence, aimed at neutralizing non-imminent or potential threats, is widely viewed as inconsistent with Article 51. The “Bush Doctrine” of pre-emption failed to secure broad international legitimacy.

Permitting pre-emption risks enabling unilateral military interventions, undermining the Charter’s prohibition on force and the Security Council’s role. Consequently, most states and scholars endorse a strict reading of Article 51 to prevent abuse.

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Sakshi Negi

Sakshi Negi is a Delhi-based journalist and content specialist with expertise in educational content and digital media, focusing particularly on government exam preparation and career guidance. With a degree in Journalism and Mass Communication from NRAI School of Mass Communication and her background as a Kendriya Vidyalaya alumna, she brings unique insights into the Indian education system and government sector opportunities.

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