ABSTRACT:
India’s contemporary foreign policy is increasingly defined by a delicate balancing act between assertion of sovereignty, pursuit of strategic autonomy, and adherence to the rules‑based international order. This article examines how India navigates its diplomatic choices—particularly in relation to great‑power rivalries, use of force, diplomatic law, and multilateral engagement—while formally and substantively remaining committed to international legal principles. It traces India’s evolution from Nehruvian non‑alignment to the present‑day doctrine of “strategic autonomy,” highlighting how this posture shapes India’s interpretation of treaty obligations, customary international law, and the UN Charter framework.
The analysis focuses on several key domains: India’s constitutional and jurisprudential relationship with international law, its invocation of self‑defence against cross‑border terrorism within the limits of article 51 of the UN Charter, its practice under the Vienna Conventions on diplomatic and consular relations, and its active participation in multilateral forums such as the United Nations, G‑20, BRICS, QUAD and regional cooperation mechanisms. The article also explores India’s role in South‑South cooperation and emerging norm‑fields like climate law, disaster resilience and digital governance, where India seeks to reform rather than merely receive international legal norms.
Through this lens, the article argues that India’s diplomacy under international law is not merely a reflection of geopolitical pragmatism but a conscious effort to reconcile national interest with global responsibility. By selectively engaging with multiple blocs, insisting on representation and equity in global institutions, and framing its security actions in the language of legality and proportionality, India attempts to project itself as a responsible, yet autonomous, actor in world affairs. The study concludes that India’s balancing act—between principle and flexibility, between sovereignty and multilateralism—reveals both the opportunities and the tensions inherent in its ambition to shape, rather than merely adapt to, the evolving architecture of international law.
KEYWORDS: Diplomatic balancing, International Law, Non-Alignment, Vienna Conventions, Multilateralism, Global South, Customary International Law, Sovereignty, Self-Defence.
INTRODUCTION:
India’s foreign policy in the 21st century rests on a simple but potent idea: strategic autonomy guided by the principles of international law. In an era of great‑power rivalry, fragmented alliances, and normative contestation, India has consciously positioned itself as a “responsible stakeholder” that seeks to protect its sovereignty while simultaneously engaging with and reinforcing the rules‑based international order. This balancing act is not merely a reflection of geopolitical pragmatism; it is anchored in India’s constitutional ethos, its treaty commitments, and its jurisprudence on customary international law.
India navigates its diplomatic choices between non‑alignment, alignment, and selective partnership while remaining formally and substantively committed to international law. It begins by mapping India’s constitutional and doctrinal relationship with international law, then examines key domains such as the use of force, diplomatic immunity, multilateralism, and South‑South cooperation before concluding with a reflection on the tensions and possibilities built into India’s “balancing” posture.
CONSTITUTIONAL AND DOCTRINAL FOUNDATION:
At the formal level, India’s commitment to international law is embedded in the Constitution. Article 51(c) of the Indian Constitution directs the State to “foster respect for international law and treaty obligations in the dealings of organized peoples with one another.” This provision sits within Directive Principles of State Policy, which, though not directly enforceable, exert a strong normative and interpretive force on legislative and executive conduct.
In practice, India has moved from a dualist posture—where international law remains outside domestic law unless legislated—towards a more monist‑leaning approach. Courts have held that customary international law (CIL) not contrary to municipal law is presumed to form part of Indian law, as seen in Vellore Citizens Welfare Forum v. Union of India (1996), where the Supreme Court recognised the “precautionary principle” as part of CIL. Scholars note that the judiciary has, in numerous habitat and environmental law cases, treated CIL as presumptively binding, even when the precise customary status is debated in international scholarship.
On treaties, India ratified the Vienna Convention on the Law of Treaties (VCLT) and has applied core principles, such as article 27 (no invocation of domestic law to justify non‑performance), in domestic litigation. High courts have cited the VCLT both to interpret treaty‑based obligations and to reinforce the sanctity of international commitments, signalling that India does not treat its treaty obligations as mere political declarations.
STRATEGIC AUTONOMY AND NON-ALIGNMENT:
India’s contemporary balancing act cannot be understood without tracing its intellectual lineage from Nehruvian non‑alignment to the present‑day language of “strategic autonomy.” Non‑alignment never meant indifference; it meant refusing to become a permanent client of any great power while still engaging in multilateralism and international law. Modi‑era discourse repackages this as strategic autonomy, a flexible posture that allows India to cooperate with multiple blocs simultaneously without irrevocable alignment.
This doctrine shapes how India interprets international legal obligations. For example, on the Russo‑Ukrainian war, India has abstained from UN resolutions explicitly condemning Russia, while repeatedly calling for “respect for the UN Charter, territorial integrity and sovereignty of nations” and the “peaceful settlement of disputes.” A 2023 study notes that this neutrality reflects lessons India draws from its own border disputes and Kashmir, where it is wary of precedents that could legitimise unilateral territorial change.
India’s non‑aligned stance also extends to its balancing of partnerships with Russia, the United States and Europe. While defence ties have historically relied on Russia, India is increasingly deepening security‑technology partnerships with the US, France, Israel, Australia, Japan and South Korea. Analytical papers on India’s Indo‑Pacific strategy describe this as hedging and multi‑alignment—engaging simultaneously with QUAD, BRICS, SCO and G‑20—so as to maximise option space rather than commit to a single pole.
USE OF FORCE AND SELF-DEFENCE UNDER INTERNATIONAL LAW:
India’s military responses, including recent operations such as Operation Sindoor after the Pahalgam terrorist attack, have been presented in the language of self‑defence against non‑state actors hosted by a neighbouring state. Commentators note that India’s Foreign Secretary has affirmed that the strikes were responses to cross‑border terrorism, implicitly invoking article 51, while also informing 13 out of 15 Security Council members about the action, which is consistent with procedural expectations under the Charter.
India has also articulated a doctrinal position on the “unwilling or unable” test. At a UN Security Council Arria‑formula meeting in 2021, India outlined three conditions under which it might invoke self‑defence against threats emanating from another state: repeated attacks by non‑state actors; the host state’s unwillingness to neutralise the threat; and the host state’s active support or sponsorship of those actors. These conditions resemble arguments used by other states to justify cross‑border strikes, though their legal status as CIL remains contested in international doctrine.
From a balancing‑act perspective, India’s posture is carefully calibrated: it asserts its right to self‑defence without explicitly endorsing expansive doctrines that might be used against its own territorial claims. India’s emphasis on the need for “measured” and “proportionate” responses, and its repeated references to UN Charter principles, signals an attempt to anchor its security policy within the existing legal framework even as it stretches its boundaries.
DIPLOMATIC LAW: VIENNA CONVENTIONS AND IMMUNITIES:
India’s practice illustrates both compliance and contestation. On the one hand, India grants full diplomatic privileges and immunities to foreign diplomats in India, and invokes the VCDR to protect the rights of its own envoys abroad. In the Devyani Khobragade case, the External Affairs Ministry publicly insisted that India would implement the Vienna Conventions fully and demand their strict implementation by the United States, underscoring that adherence is not selective but a matter of principle.
On the other hand, India has occasionally found itself at odds with other states over the application of diplomatic law. For instance, in the 2023 India–Canada diplomatic row, India accused Canada of failing to provide adequate security for its diplomats, which, it argued, violated the “most fundamental” aspects of the Vienna Convention. Such disputes show that India does not merely accept diplomatic law as a technical tool; it actively uses it as a shield and a lever in its diplomatic negotiations.
India’s stance can be summarised as principled but flexible: it upholds the core norms of inviolability and immunities, while simultaneously insisting that host‑state obligations under the Vienna Conventions are not optional. This posture allows India to balance its image as a rule‑abiding state with its ability to respond assertively when it perceives breaches of diplomatic law.
MULTILATERALISM, REFORM AND THE GLOBAL SOUTH:
India’s diplomacy is increasingly framed through multilateral forums: the United Nations, G‑20, BRICS, SCO, and newer groupings such as the International Solar Alliance (ISA) and the Coalition for Disaster Resilience Infrastructure (CDRI). India positions itself as a leader of the Global South, advocating “reformed multilateralism” emphasising inclusivity, representation, and equity.
In UN debates, India has consistently argued for the expansion of the Security Council and for greater voice for developing countries in international financial institutions. Advocacy for Security‑Council reform is justified in India’s discourse as a matter of international legal fairness: representation must reflect contemporary power distributions, not 1945‑era configurations.
India’s role in creating or co‑leading new institutions, such as ISA and CDRI also reflects an attempt to shape international law from the bottom up. By hosting or co‑founding coalitions focused on climate‑energy transitions and disaster‑resilience infrastructure, India signals that it is not merely a passive recipient of Western‑centric norms but an active norm‑entrepreneur in emerging fields of law.
At the same time, India’s balancing act is evident in how it navig bulletins between Western‑centric and emerging‑bloc agendas. Through QUAD, India engages on maritime security and freedom of navigation under the law of the sea; through BRICS and SCO, it engages on development‑finance and regional‑security cooperation. These forums are not always consistent in their normative language, yet India deliberately frames its participation in terms of rule‑based cooperation often invoking UNCLOS, UN Charter principles, and climate‑change law to preserve its legal‑credibility.
SOUTH-SOUTH COOPERATION AND DEVELOPMENTAL NORMS:
India’s commitment to international law is not confined to the traditional domains of use‑of‑force and diplomacy; it also extends to economic and developmental law. As a founding member of BRICS, India has advocated reforms in the IMF and World Bank to reflect the rise of emerging economies. India has also championed a developmental agenda on issues such as climate change, cybersecurity, counter‑terrorism and transnational crime, often articulating these concerns through multilateral resolutions and declarations.
India’s approach to development‑related law is marked by a tension: on the one hand, it seeks to uphold the global legal architecture (e.g., climate‑treaty frameworks, WTO rules); on the other, it insists on special and differential treatment for developing countries. Scholars describing India as a “normative middle‑power” argue that this posture reflects an attempt to balance its own status as a developing economy with its growing role as a provider of development finance and capacity‑building.
Examples include India’s contributions to the Global Biofuels Alliance and its role in climate‑finance and technology‑transfer negotiations. These initiatives are framed as compliant with international law—adaptation, mitigation and sustainable‑development obligations under the UNFCCC family—but are simultaneously tailored to protect India’s energy‑security and industrial‑development interests.
CONCLUSION:
India’s diplomatic balancing under international law is not a mere exercise in realpolitik; it is a deliberate attempt to reconcile the imperatives of sovereignty, security and strategic autonomy with the demands of a rules‑based global order. Throughout this article, it has become evident that India does not treat international law as a decorative veneer for its foreign policy, nor does it see itself as a passive bystander in the making of global norms. Instead, India positions itself as a responsible, yet assertive, actor that seeks to uphold core legal principles—such as the prohibition on the use of force, respect for territorial integrity, diplomatic inviolability and multilateralism—while simultaneously shaping those rules to reflect the interests and voices of the Global South.
The balancing act is most visible in how India navigates great‑power rivalries: it deepens partnerships with the United States, Europe and like‑minded democracies through QUAD, G‑20 and other formats, even as it maintains working ties with Russia and other non‑Western powers. In doing so, India avoids irrevocable alignment but also avoids isolation, ensuring that its foreign policy remains anchored in international law rather than in relational dependency. This posture is further reinforced by India’s consistent invocation of the UN Charter, the Vienna Conventions, and customary international law in domestic jurisprudence and diplomatic practice, signalling that legal commitments are not optional add‑ons but central pillars of state conduct.
At the same time, India’s approach reveals a subtle but important tension: the desire to preserve flexibility in security and strategic choices, such as in the domain of self‑defence against cross‑border terrorism, while still adhering to the formal language of legality, proportionality and necessity. This is where India’s balancing becomes both its strength and its challenge. On the one hand, it allows India to project itself as a responsible nuclear‑weapon‑state and a rule‑abiding member of the global community; on the other hand, it invites scrutiny from international legal scholars and partners who question the boundaries of doctrines such as “pre‑emptive self‑defence” and the “unwilling or unable” test.
Ultimately, India’s diplomatic balancing under international law can be understood as an evolving synthesis of three elements: principled adherence to foundational norms, pragmatic adjustment to shifting geopolitical realities, and normative entrepreneurship in emerging fields such as climate law, digital governance, and disaster resilience. As India continues to rise in global stature, its ability to maintain this balance will depend not only on its military and economic weight but also on the credibility and consistency with which it upholds and interprets the very rules it seeks to reform. If India succeeds in this endeavour, it may not only safeguard its own interests but also contribute to a more inclusive, equitable, and genuinely multilateral international legal order.
- Minerva Mills Ltd. v. Union of India, (1980) 3 SCC 625 (on the normative force of Directive Principles).
- Vellore Citizens Welfare Forum v. Union of India, (1996) 5 SCC 647 (Supreme Court holding CIL not contrary to municipal law to be incorporated).
- Ministry of External Affairs, Role of India in Multilateral Forums. (India’s membership in UN, G‑20, BRICS, ISA, CDRI, etc.)
- Ministry of External Affairs, India’s Diplomacy and the Vienna Conventions.
- India’s Middle Power Diplomacy in the 21st Century, IJFMR.
- QUAD, BRICS and the United States: India’s Balancing Act, Journal of Political Science, 2023
- Self‑Defence Clause Under UN Charter, Drishti IAS (on India’s three conditions for self‑defence)
- Operation Sindoor and the Legal Boundaries of Preemptive Self‑Defence, Juris Centre.
- India’s Military Response and International Law, Vajiram & Ravi, 16 May 2025 (on UNSC reporting and self‑defence framing)
- Vienna Convention on Diplomatic Relations, The Unique Academy.
- India’s Role in Rebalancing Multilateralism and Global Governance, PW OnlyIAS (on UN Security Council, WTO, G‑20, QUAD, SCO).
- India’s Multilateral Agreements – BRICS and Economic Cooperation, India‑Briefing. (on IMF and World Bank reform advocacy)