Why Trump's Iran Sanctions Could Split the Global South, and What That Means for South Asia

For six months, the world has watched a grinding war in the Persian Gulf. Now the United States is betting that crushing economic measures will force Iran to the table. But the gamble carries a dangerous side-effect: it could splinter the Global South into blocs that either comply or defy Washington, with South Asia caught in the middle.

What makes this moment different is that the sanctions campaign is not just about Iran's nuclear file. It is a test of whether the United States can still dictate the rules of the global economy in an era when the dollar's primacy is under challenge, China's financial networks are expanding, and India and Pakistan are hedging their bets. If even a handful of non-aligned states refuse to join the embargo, the entire architecture of coercive diplomacy could begin to crack. For Islamabad, Kabul and Delhi, the stakes are immediate: oil flows, port access, and the viability of the China-Pakistan Economic Corridor (CPEC) could all be at risk.

Why This Sanctions Blitz Could Backfire on Washington, and Reshape South Asia

At first glance, the Trump administration's move looks like a classic exercise in economic statecraft. After six months of inconclusive war, the White House has shifted from kinetic strikes to financial siege. The stated goal is to cut off Iran's remaining export earnings, starve its war machine, and force Tehran to accept a ceasefire and a new nuclear deal. But the strategy is built on a fragile assumption: that the rest of the world will fall in line. That assumption is already under strain.

Washington's demand for "the greatest coordinated economic isolation in history" is a direct challenge to the multipolar order that has taken shape since the Ukraine war. Countries that once grudgingly accepted U.S. secondary sanctions, India, Turkey, South Africa, Indonesia, are now more willing to defy them. India, for instance, has quietly resumed some Iranian oil purchases via rupee-rial barter deals, despite U.S. warnings. Turkey has deepened its trade links with Iran through the "minimum payment" mechanism that bypasses SWIFT. Even the UAE, once a sanctions-busting hub, has signaled it will not fully comply.

For South Asia, the ripple effects are immediate. Pakistan's energy lifeline runs through Iran's Chabahar port and the land corridor to Afghanistan. Any disruption to Iranian oil supplies could push Islamabad toward deeper reliance on Russian crude, further entrenching Moscow's footprint in the region. India, meanwhile, is caught between its strategic partnership with Washington and its long-standing energy ties with Tehran. Delhi's decision to keep buying Iranian oil, albeit in smaller volumes, is a direct challenge to U.S. demands. If Washington retaliates by sanctioning Indian firms, it risks pushing Delhi closer to Moscow and Beijing, accelerating the formation of an anti-hegemonic bloc that excludes the U.S. entirely.

The most dangerous outcome for Washington would be a coordinated defiance by the Global South. If India, Pakistan, Turkey, and South Africa all refuse to join the sanctions regime, the U.S. will face a humiliating choice: either back down and admit the policy has failed, or escalate by sanctioning allies and partners. Either path weakens American credibility. Either path forces South Asian capitals to recalibrate their foreign policies in ways that could outlast the current crisis.

From War Room to Sanctions Chamber: How We Got Here

The current confrontation did not emerge overnight. It is the culmination of a decade-long cycle of escalation that began with the 2015 nuclear deal and collapsed under Trump's 2018 withdrawal. The 2020 assassination of Qassem Soleimani triggered a series of tit-for-tat strikes that culminated in the six-month war that started in February 2026. That war, according to Al Jazeera reporting, has already displaced over 1.2 million people, crippled Iran's oil exports by 70%, and pushed Tehran to the brink of a full-scale economic collapse.

But sanctions alone have never toppled a regime. The 2012-2015 sanctions regime against Iran did cripple its economy, but it also created a siege mentality that reinforced the Revolutionary Guards' grip on power. The current campaign is more severe. It targets not just Iran's central bank and oil sector, but also its petrochemical, shipping, and financial networks. The U.S. is also pressuring secondary jurisdictions, Turkey, the UAE, India, China, to cut all ties with Iranian entities or face penalties. The White House has framed this as a moral crusade: "We are not asking countries to choose between us and Iran," Trump said in a late-night address. "We are asking them to choose between civilization and barbarism."

Yet the moral framing obscures a strategic reality: the sanctions are not just about Iran. They are about maintaining U.S. dominance in the global financial system. The dollar's role as the world's reserve currency is under threat. China's Cross-Border Interbank Payment System (CIPS) and Russia's System for Transfer of Financial Messages (SPFS) are gaining traction. India's rupee-rial trade mechanism with Iran is a direct challenge to SWIFT. If these alternatives gain critical mass, the U.S. loses its most potent weapon: the ability to cut countries off from the global economy with a stroke of a pen.

Iran's response has been equally uncompromising. Supreme Leader Khamenei has declared that any country joining the U.S. campaign will be treated as an enemy. Iran's foreign minister has warned that the Strait of Hormuz will be closed if the sanctions tighten further. Meanwhile, Tehran has deepened its ties with Russia, China, and North Korea, creating a sanctions-proof axis that could outlast the current crisis. The stage is set for a prolonged economic war that neither side can win, but both sides refuse to lose.

What Washington Is Really Demanding, and Why It May Not Get It

According to reporting by Al Jazeera, the Trump administration has laid out three core demands to the international community: first, cut all oil imports from Iran by 90% within 90 days; second, freeze all assets of the Iranian Revolutionary Guards Corps (IRGC) and its affiliates; third, expel all Iranian diplomats and intelligence operatives from embassies worldwide. Countries that comply will receive political and economic carrots, debt relief, trade deals, security guarantees. Those that resist will face sticks, secondary sanctions, travel bans, asset freezes.

The problem is that the carrots are dwindling while the sticks are blunt instruments. The U.S. no longer controls the global financial system the way it once did. The rise of alternative payment systems, the growth of cryptocurrency, and the expansion of barter trade have created escape hatches that sanctions cannot plug. India, for instance, has been buying Iranian oil in rupees since 2022, using a mechanism that bypasses SWIFT entirely. Pakistan has been paying for Iranian gas in Chinese yuan, a currency that is not subject to U.S. jurisdiction. Even the UAE, once a sanctions-busting hub, has signaled it will not fully comply, opting instead for a "managed de-risking" strategy that keeps some trade channels open.

The U.S. is also demanding that India, Pakistan, and other South Asian states join the sanctions regime. But Delhi and Islamabad have their own calculations. India's energy security depends on Iranian oil, and its strategic partnership with Washington is already strained by the U.S.'s refusal to accommodate India's concerns about China. Pakistan, meanwhile, is desperate for Iranian gas to offset its chronic energy shortages. Kabul, under Taliban rule, is even more dependent on Iranian electricity and trade routes. For these countries, the choice is not between civilization and barbarism, it is between economic survival and political obedience.

Washington's leverage is further weakened by the fact that the global economy is already in a precarious state. The post-pandemic recovery is stalling. Inflation is rising. Supply chains are fragile. A full-scale sanctions regime against Iran could push oil prices above $120 a barrel, triggering a global recession. That would hurt U.S. allies as much as adversaries, undermining the very coalition Washington is trying to build.

And then there is the question of enforcement. The U.S. has already sanctioned dozens of Iranian tankers, shipping companies, and insurers. But Iran has responded by rerouting its oil exports through smaller, harder-to-track vessels. It has also deepened its ties with Venezuela and Cuba, creating a sanctions-resistant trade network. The cat-and-mouse game is far from over, and the U.S. is running out of mice.

Global and Regional Reaction: Who Is Defying Washington, and Why

The international response to the U.S. sanctions campaign has been swift, and deeply divided. The European Union, despite its rhetoric of strategic autonomy, has largely fallen in line, though some member states have quietly lobbied for exemptions. The United Kingdom has pledged full support, while France and Germany have signaled they will comply but are wary of secondary sanctions that could hurt their firms. Japan and South Korea, both U.S. allies, have reduced their Iranian oil imports but are not fully compliant, citing energy security concerns.

China, however, has been the most defiant. Beijing has not only continued to import Iranian oil, albeit at reduced volumes, but has also deepened its economic and military ties with Tehran. In June 2026, the two countries signed a 25-year cooperation agreement that includes energy, infrastructure, and security cooperation. The deal is a direct challenge to U.S. dominance in the region and a signal that Beijing is willing to bear the costs of defiance.

In South Asia, the reactions have been equally mixed. India has been the most vocal in resisting U.S. pressure. Despite repeated warnings from Washington, Delhi has continued to purchase Iranian oil through rupee-rial barter deals. Indian officials have argued that their energy security is non-negotiable, and that the U.S. has no right to dictate India's foreign policy. Pakistan, meanwhile, has taken a more cautious approach. Islamabad has reduced its Iranian oil imports but has not fully complied, citing its desperate energy needs. The Taliban government in Kabul has been even more defiant, openly defying U.S. demands and deepening its ties with Tehran.

The most striking defiance, however, has come from the Global South's middle powers. Turkey has refused to cut its trade ties with Iran, opting instead for a "minimum payment" mechanism that keeps some trade channels open. South Africa has deepened its economic ties with Iran, including a $5 billion currency swap deal. Indonesia, meanwhile, has called for a negotiated solution, arguing that sanctions will only prolong the war and deepen humanitarian suffering.

The divide is not just about Iran, it is about the future of the global order. Countries that once accepted U.S. hegemony are now more willing to defy it. The sanctions campaign may succeed in isolating Iran, but it is also accelerating the fragmentation of the international system into competing blocs. For South Asia, the stakes could not be higher: the region's energy security, trade routes, and strategic partnerships are all on the line.

South Asia at the Crossroads: Energy Routes, Security Alliances, and the CPEC Factor

For Pakistan, the stakes are existential. The country is facing its worst energy crisis in decades, with rolling blackouts and soaring fuel prices. Iranian gas and electricity have been a lifeline, especially for Balochistan and Sindh. The Iran-Pakistan gas pipeline, which was completed in 2024, is now a critical artery for Pakistan's energy security. If Washington's sanctions cut off Iranian gas, Islamabad will have to find alternative suppliers, likely Russia or Turkmenistan, at a time when its foreign reserves are already depleted. The economic and political fallout could be catastrophic.

For India, the dilemma is equally fraught. Delhi has been a key U.S. partner in countering China's rise, but its energy security depends on Iranian oil. India has been buying Iranian crude since the 1990s, and the relationship has deepened under Modi's "Look West" policy. But Washington's sanctions campaign has forced Delhi to make a choice: comply with U.S. demands and risk energy shortages, or defy Washington and risk sanctions. So far, India has chosen defiance, albeit quietly. Indian refiners have resumed purchases of Iranian oil, albeit in smaller volumes, using rupee-rial barter deals that bypass U.S. financial networks. But the U.S. has warned that such deals could trigger secondary sanctions, raising the stakes for Delhi.

The Taliban's Afghanistan is in an even more precarious position. Kabul is heavily dependent on Iranian electricity and trade routes. The Taliban has been importing up to 700 MW of electricity from Iran, as well as food and fuel. If Washington's sanctions cut off these supplies, the humanitarian crisis in Afghanistan could spiral out of control. The Taliban has already signaled that it will not comply with U.S. demands, deepening its ties with Tehran. But the cost of defiance could be devastating for the Afghan people.

The China-Pakistan Economic Corridor (CPEC) is another critical variable. The corridor, which runs from Gwadar to Kashgar, is a flagship project of China's Belt and Road Initiative. But CPEC's viability depends on regional stability, and Iranian gas has been a key component of Pakistan's energy mix. If Washington's sanctions cut off Iranian gas, Islamabad may have to rely more heavily on Chinese imports, further entrenching Beijing's influence in Pakistan. That could accelerate the formation of a Beijing-Islamabad-Tehran axis that excludes Washington entirely. For Delhi, such an axis would be a strategic nightmare, further isolating India in its own backyard.

The last time South Asia faced a similar crossroads was during the 2019 India-Pakistan standoff over Kashmir. At the time, the U.S. brokered a de-escalation that prevented a full-scale war. But this time, the stakes are higher, and the players are more fragmented. The U.S. is no longer the sole arbiter of regional stability. China, Russia, and Iran are all staking their claims. For South Asia, the question is not whether to comply with U.S. sanctions, but how to navigate a world where the old rules no longer apply.

What Happens Next: Three Possible Paths, and Their Consequences

Analysts expect the U.S. sanctions campaign to unfold along three possible paths over the next 12 months. Each path carries distinct risks for South Asia, and distinct opportunities for those willing to defy Washington.

The first path is the one Washington is betting on: a coordinated global embargo that forces Iran to the negotiating table. Under this scenario, the U.S. successfully pressures India, Pakistan, and other South Asian states to cut their Iranian oil imports. The resulting economic collapse in Iran forces Tehran to accept a ceasefire and a new nuclear deal. The U.S. achieves its goals without triggering a global recession or a backlash from the Global South. But this scenario is unlikely. India and Pakistan have already signaled their unwillingness to fully comply, and the humanitarian cost of a full embargo would be catastrophic. Even if the U.S. succeeds in cutting off Iranian oil exports, Tehran could retaliate by closing the Strait of Hormuz, triggering a global oil shock.

The second path is a prolonged stalemate. Under this scenario, the sanctions campaign fails to force Iran to the negotiating table, but it also fails to trigger a global backlash. Iran continues to export oil through alternative channels, while the U.S. struggles to enforce its secondary sanctions. The result is a prolonged economic war that neither side can win, but both sides refuse to lose. For South Asia, this scenario would mean continued energy shortages, rising fuel prices, and a deepening humanitarian crisis. Pakistan and Afghanistan would bear the brunt of the fallout, while India would face a strategic dilemma: defy Washington and risk sanctions, or comply and alienate a key energy supplier.

The third path is the most dangerous: a fragmentation of the global order into competing blocs. Under this scenario, the U.S. sanctions campaign triggers a wave of defiance from the Global South. India, Pakistan, Turkey, and South Africa all refuse to fully comply, creating a sanctions-resistant axis that includes China, Russia, and Iran. The U.S. responds by escalating its secondary sanctions, targeting allies and partners. The result is a world divided into rival economic blocs, with South Asia caught in the middle. For Islamabad, this could mean deeper reliance on Chinese and Russian energy supplies. For Delhi, it could mean accelerating its strategic partnership with Moscow and Beijing. For Kabul, it could mean a humanitarian catastrophe as Iranian supplies dry up.

The most likely outcome, according to analysts, is a mix of the second and third paths. The U.S. will fail to achieve a full embargo, but it will also fail to trigger a global backlash. Instead, the sanctions campaign will accelerate the fragmentation of the global order, creating a world where the old rules no longer apply. For South Asia, the consequences will be profound. Energy routes will shift. Trade corridors will realign. Security alliances will fracture. The region's leaders will face a stark choice: defy Washington and risk economic collapse, or comply and risk strategic irrelevance.

Key Takeaways

• Washington's sanctions campaign against Iran is not just about Tehran, it is a test of U.S. dominance in the global financial system, and South Asia is ground zero for the fallout.
• For Pakistan, the stakes are existential: Iranian gas and electricity are critical to its energy security, and defying U.S. sanctions could trigger a humanitarian crisis.
• For India, the dilemma is strategic: Delhi must choose between defying Washington and risking sanctions, or complying and alienating a key energy supplier.