US-Iran tensions have intensified since 2018 when America withdrew from the JCPOA nuclear deal and reimposed sanctions. Iran's uranium enrichment reached 60% by 2021, approaching weapons-grade levels. Recent drone strikes, proxy conflicts, and regional escalations have disrupted Middle Eastern stability. For India, this complicates its energy imports, Chabahar Port project, and connectivity to Central Asia through Iran's International North-South Transport Corridor.

The US-Iran conflict fundamentally alters India's strategic calculus in accessing Central Asian markets and energy resources. Iran serves as India's traditional gateway to landlocked Central Asia through the INSTC, reducing transit time by 40% compared to current routes via Russia. However, US sanctions create compliance challenges for Indian banks and businesses operating in Iran. India's Chabahar Port investment of $500 million faces operational constraints despite American waivers. Energy security suffers as Iran was historically India's third-largest oil supplier before sanctions. The conflict forces India to diversify trade routes through Russia, potentially increasing costs and transit times. Central Asian nations like Kazakhstan and Uzbekistan, seeking energy export alternatives, may pivot toward China's Belt and Road Initiative if India-Iran connectivity remains uncertain. This geopolitical tension threatens India's vision of becoming Central Asia's primary economic partner, potentially ceding strategic space to China in the resource-rich region while complicating India's multi-alignment policy between Washington and Tehran.