Trade has long been viewed through the lens of comparative advantage, from Ricardo’s productivity focus to the Heckscher-Ohlin model’s emphasis on factor endowments enabling resource arbitrage across borders. In theory, freer trade narrows income gaps and boosts growth, as suggested by empirical work on liberalization. In practice, however, interdependence has been transformed into a strategic vulnerability. Nations now deploy tariffs, secondary sanctions, export controls, and market-access restrictions as instruments of economic coercion—tools of non-kinetic warfare capable of imposing severe costs on a target’s exports, energy security, employment, and growth without firing a shot. This weaponization exploits asymmetric dependencies. A country that controls a large consumer market, critical technologies, or financial chokepoints can raise the cost of access or deny it altogether to extract political concessions. The result can devastate economic wellbeing: lost export revenues, higher input costs, disrupted supply chains, inflationary pressure, and reduced investment confidence. Recent developments in US-India trade relations illustrate these dynamics vividly.
Mechanisms of Trade as Economic Warfare
Several instruments stand out:
- Punitive and reciprocal tariffs: Steep duties can render a country’s goods uncompetitive overnight in a major market. When applied selectively or linked to non-trade issues, they function as leverage rather than pure protection.
- Secondary sanctions and energy-linked penalties: Measures that punish third countries for trading with a primary target (e.g., purchasing discounted oil) force painful trade-offs between energy security and export markets.
- Export controls and technology denial: Restrictions on advanced semiconductors, dual-use goods, or critical minerals slow industrial upgrading and military modernization.
- Supply-chain and market-access coercion: Informal embargos, licensing delays, or “unreliable entity” lists raise uncertainty and encourage diversification away from the coercing power—or submission.
Historical precedents include China’s rare-earth restrictions and informal boycotts, US semiconductor controls on China, and broad financial sanctions. These tools are attractive because they are reversible, deniable in intent, and less escalatory than military action, yet they can still inflict measurable GDP losses, sectoral unemployment, and fiscal strain.
anantamias.com
The US-India Case: Tariffs, Russian Oil, and Leverage
The United States is India’s largest trading partner. Bilateral goods trade reached roughly $149 billion in 2025, with India running a substantial surplus. Key Indian exports—pharmaceuticals (a major supplier of US generics), gems and jewellery, textiles and apparel, electronics, and chemicals—rely heavily on the American market. This dependence creates leverage.
aljazeera.com
Tensions escalated sharply in 2025. The Trump administration imposed a 25% reciprocal tariff on many Indian goods, then added another 25% penalty explicitly tied to India’s purchases of Russian crude, bringing effective rates to as high as 50% on a wide range of products—among the steepest applied to any major partner. Indian exporters in textiles, gems, and other labour-intensive sectors faced immediate competitive disadvantages relative to rivals in Vietnam, Bangladesh, and elsewhere. Corporate strategies for “China+1” diversification into India were disrupted, and investment decisions paused.
nytimes.com
India had ramped up Russian oil imports after 2022 to secure discounted supplies for its energy-hungry economy (importing more than 90% of its crude). Russian barrels at times accounted for 40% or more of India’s crude basket, rising further amid Middle East disruptions. Washington framed continued purchases as undermining efforts to constrain Russia’s revenue. India countered that energy security for 1.4 billion people and market-driven sourcing took precedence, and that it had also increased purchases of US energy.
nytimes.com
In February 2026 an interim framework emerged: the additional Russian-oil penalty was rolled back, reciprocal rates were moderated (reports cited around 18% in some formulations), and ambitions for expanding bilateral trade toward $500 billion were restated. Implementation and interpretation diverged, however. India’s Russian imports later rebounded amid regional energy shocks. In September 2026, President Trump signed the Lindsey O. Graham Sanctioning Russia and Iran Act, authorizing tariffs of up to 100% on goods from countries that rank among the largest purchasers of Russian energy or facilitate sanctions evasion. India, as one of the top buyers, faces clear exposure. The law grants the executive substantial discretion, turning the threat itself into negotiating leverage during ongoing trade talks.
indianexpress.com
As of early October 2026, talks remain in a “final phase” but a comprehensive deal is not imminent. Sticking points include market access, agriculture, digital issues, and the energy linkage. Indian officials have publicly criticized self-centred trade policies and emphasized strategic autonomy. Exporters have already seen share-price volatility in textiles and other sectors at the mere prospect of renewed high duties. A full 100% tariff overlay on top of existing rates would sharply raise the cost of Indian goods in the US, potentially diverting orders, forcing factory closures or layoffs in export clusters, and widening the bilateral trade imbalance in ways that harm Indian growth.
Pathways to Economic Devastation
For a nation like India, sustained weaponized trade pressure could cascade:
- Export contraction in high-employment sectors (textiles, gems, pharmaceuticals) raises unemployment and reduces foreign-exchange earnings.
- Higher effective tariffs or the need to absorb them compresses margins, discourages investment, and slows manufacturing expansion under initiatives such as Make in India or Production-Linked Incentives.
- Energy trade-offs: Cutting Russian volumes to avoid tariffs could raise domestic fuel costs, fuel inflation, and strain fiscal resources if subsidies expand—politically sensitive ahead of elections.
- Broader confidence effects: Uncertainty deters FDI, complicates supply-chain diversification, and encourages partners to hedge away from both the coercer and the target.
- Secondary effects: Retaliatory or defensive measures by India (higher barriers, diversification toward EU, ASEAN, or others) risk further fragmentation and higher costs for consumers and industry on both sides.
Empirical patterns from other episodes show that large, sudden tariff shocks reduce bilateral trade volumes significantly, with incomplete pass-through and lasting damage to specialized exporters. While India has diversified markets and built domestic capacity, the scale of the US market and the concentration of certain exports leave residual vulnerability.
Mitigating Risks and Broader Implications
Countries facing such pressure pursue resilience: export diversification, deeper free-trade agreements with alternative partners, strategic stockpiles, domestic manufacturing of critical inputs, and reciprocal legal tools for counter-coercion. India has accelerated outreach to Europe and others while reiterating energy-security priorities. Multilateral rules under the WTO offer limited rapid relief against measures framed as national-security or secondary-sanctions tools. The US-India experience underscores a larger shift. Trade is no longer solely an engine of mutual gains under factor-proportion or productivity models; it is also a domain of strategic competition. When major powers treat market access and energy flows as levers, smaller or middle powers confront difficult trilemmas among growth, autonomy, and security. Reducing excessive bilateral dependence, building diversified supply chains, and strengthening domestic capabilities remain the most reliable defences. In an era of weaponized interdependence, economic wellbeing increasingly depends on the ability to absorb or deter coercion as much as on classical comparative advantage.