US-Iran strikes rattle oil markets and global bourses as Japan's bond yields hit a 30-year high

Chokepoint risk is the core transmission mechanism here: roughly 20% of globally traded oil and significant volumes of LNG pass through the Strait of Hormuz daily. Even a partial disruption — or the credible threat of one — is enough to spike Brent crude and WTI prices, as buyers scramble to secure alternative supply or build precautionary inventories. The Bloomberg report noted Iran's unusually public gloating, which markets read as a signal that de-escalation is not imminent.

For India, the impact is acute and multi-channel. India imports roughly 85% of its crude oil needs, making it one of the world's most exposed large economies to an oil price shock. A sustained surge in crude directly widens India's current account deficit, puts upward pressure on retail fuel prices and headline CPI inflation, and complicates the RBI's rate-cutting path. Indian bond yields hit a three-week high on the day as oil-driven inflation fears resurfaced (item 10), the rupee came under pressure, and the Sensex shed 531 points with Bajaj Finance and ITC among the top losers (item 7). FII/FPI flows into Indian equities and bonds are also at risk if global risk appetite deteriorates further.

The dual driver — inflation and fiscal concerns — is important. Japan's inflation has been running above the BoJ's 2% target, eroding the justification for yield-curve control. At the same time, Japan's gross public debt stands at over 250% of GDP, meaning even a modest rise in yields materially increases the government's interest burden over time. Markets are now testing whether the BoJ will defend any implicit ceiling or allow yields to find a new, higher equilibrium.

For India, the channel runs through global capital flows. Japanese institutional investors — pension funds, life insurers, and banks — are among the world's largest holders of foreign assets. If rising domestic JGB yields make home-market bonds more attractive, these investors may repatriate capital, reducing the pool of global liquidity available to emerging markets like India. This could put additional pressure on the Indian rupee and FII inflows into Indian equities and bonds, compounding the stress already coming from the oil shock.

Supply-chain interdependence is the core argument the companies are making: modern US manufacturing — from semiconductors (Intel) to aerospace (Honeywell) to consumer electronics (Dell) — depends on globally sourced components. A blanket 12.5% tariff raises the landed cost of those inputs, squeezing margins or forcing price increases that reduce competitiveness against foreign rivals not subject to the same costs. The USTR process allows industry comment before final decisions, so this lobbying round could materially shape the outcome.

For India, the stakes are high. India is among the 60 targeted nations, and its export sectors — pharmaceuticals, IT hardware, textiles, gems and jewellery (De Beers' inclusion is notable) — would face direct cost headwinds in the US market. However, the strong corporate pushback also offers New Delhi diplomatic cover: Indian trade negotiators can point to US industry opposition as leverage in ongoing bilateral trade-deal talks. A resolution that carves India out of the tariff list, or reduces the rate, would be a meaningful positive for Indian export earnings and the rupee.

Burden-sharing has been Trump's consistent grievance: the US contributes disproportionately to NATO's collective defence, and he has repeatedly threatened to reduce US commitments unless European members raise defence spending to 2% of GDP or beyond. Several major European economies are now scrambling to meet or exceed that threshold, redirecting fiscal resources from social spending or running wider deficits — both of which have bond-market implications.

For India, NATO's internal tensions are a second-order but real factor. A weakened or fractured NATO reduces the West's collective capacity to manage crises from Eastern Europe to the Middle East, potentially drawing in more resources and attention from partners India relies on for defence technology transfers and diplomatic support. More immediately, European economic uncertainty driven by higher defence spending and energy costs can dampen demand for Indian IT services and exports to the EU.