TEHRAN, July 25 — The most sweeping sanctions regime in modern history began tightening around Iran in the final months of 2025, accelerating a spiral of economic pressure that culminated in open war by February 2026 and a fragile ceasefire by April. The sequence traces a deliberate escalation: diplomatic isolation, economic siege, military strike, and now a tentative return to negotiation. Each phase left its mark on Iran’s economy and regional posture, while the United States and its allies recalibrated their tools of coercion.
According to the record, the first American sanctions were imposed in November 1979 after radical students seized the United States Embassy in Tehran. Assets worth approximately $8.1 billion were frozen and a trade embargo took effect.
Although lifted in 1981 under the Algiers Accords, sanctions were reimposed in 1987 and expanded through successive executive orders and legislation. The United Nations Security Council joined the campaign in December 2006, imposing multilateral measures under Resolution 1737 after Iran refused to halt uranium enrichment.
From JCPOA to snapback
The Joint Comprehensive Plan of Action of 2015 lifted most UN and multilateral sanctions in exchange for verified limits on Iran’s nuclear programme. But the United States withdrew from the agreement in May 2018 and reimposed and expanded American measures. On the timeline, France, Germany, and the United Kingdom triggered the JCPOA’s “snapback” mechanism in August 2025, leading to the reimposition of UN sanctions on September 28, 2025.
The sanctions regime that followed was unprecedented even by Iran’s standards. Banking restrictions choked trade, oil revenues plummeted, and the rial depreciated sharply.
Humanitarian exemptions existed on paper, yet financial curbs delayed or blocked medicine and food shipments despite formal allowances. Analysts and UN experts have since debated the humanitarian consequences, while Washington and its allies maintained that sanctions remained the principal non-military means of pressuring Tehran over its nuclear programme and regional activities.
Protests and war
The sanctions-induced economic collapse fed unrest. In late 2025, protests erupted across Iran. They were violently suppressed, provoking fresh Western sanctions.
On February 28, 2026, the United States and Israel launched coordinated military strikes against Iran, killing Supreme Leader Ali Khamenei and targeting nuclear and military infrastructure. The operation became known as the 2026 Iran war.
Iran responded by closing the Strait of Hormuz and launching missile strikes across the region. A ceasefire took effect on April 8, 2026. The fighting left Iran’s infrastructure damaged and its leadership decapitated, while the United States and Israel reaffirmed their strategic objectives.
The conflict also underscored the limits of sanctions alone to curb Iran’s regional behaviour.
Ceasefire and the Swiss framework
With the guns largely silent, indirect talks resumed under Omani and Pakistani mediation. On June 17, 2026, parties signed a memorandum of understanding in Switzerland that set a 60-day framework for ceasefire consolidation, sanctions relief discussions, and nuclear talks. Two days later, on June 22, 2026, the US Treasury issued a 60-day waiver on sanctions on Iranian oil exports as part of the MoU’s initial conditions.
The waiver signalled a tactical easing, yet the underlying architecture of sanctions remained intact. The United States and the European trio retained leverage, while Iran sought relief to stabilise its economy and re-enter global markets.
The memorandum did not restore the JCPOA; it created a parallel channel focused on immediate stabilisation and de-escalation.
Economic fallout and regional spillover
The sanctions regime has left deep scars. Oil revenues declined, inflation soared, and access to the international financial system narrowed. Banking and financial restrictions also complicated the import of humanitarian goods, including medicines, despite formal exemptions.
The humanitarian impact has been debated, with some organisations citing delays and shortages, while Washington argues that exemptions mitigate harm. Regionally, the Strait of Hormuz closure in late February 2026 briefly choked a fifth of the world’s seaborne oil.
The episode underscored Iran’s ability to disrupt global energy flows, even as its own economy contracted under sanctions. Since the April ceasefire, traffic through the strait has resumed, but the episode left insurers and shipowners wary. China and Russia have continued to trade with Iran, often through barter arrangements and grey-market channels.
Analysts note that these ties have softened the blow of Western sanctions, allowing Tehran to sustain some imports and exports despite restrictions. Still, the volume and quality of trade have not returned to pre-2025 levels.
What to watch next
The 60-day window under the MoU will expire in late
Sources
{“@context”: “https://schema.org”, “@type”: “NewsArticle”, “headline”: “International sanctions crippled Iran’s economy, fueled 2026 war”, “description”: “TEHRAN, July 25 — The most sweeping sanctions regime in modern history began tightening around Iran in the final months of 2025, accelerating a spiral…”, “datePublished”: “2026-07-25T09:30:00+00:00”, “author”: {“@type”: “Person”, “name”: “Ariel Antonio”}, “publisher”: {“@type”: “Organization”, “name”: “InfoPulse Today”, “url”: “https://newsfeed.infopulsetoday.com/”}, “citation”: [{“@type”: “CreativeWork”, “url”: “https://en.wikipedia.org/wiki/Sanctions_against_Iran”}]}
