The Al Habtoor Research Centre (AHRC) presents a groundbreaking, equation-based assessment analysing the direct and indirect social and economic resource costs of the 110-day conflict that began on February 28, 2026. Utilising an advanced conflict economics framework—including the Stiglitz-Bilmes convention and counterfactual synthetic controls—this research delivers an unprecedented, exclusive analysis of the financial burdens borne by the belligerents and the wider global economy. The headline finding is one of profound asymmetry, proving that recovery capacity, rather than the size of the initial kinetic blow, dictates the medium-term cost of modern warfare. The largest financial burden fell on the global economy, specifically non-belligerent, bystander oil-importing nations, totalling an estimated $1.41 trillion by 2030. Triggered by the 110-day closure of the Strait of Hormuz, this true burden lies in unproduced global output rather than the temporary oil-price spike, which ultimately nets to zero globally. Among the combatants, Iran absorbed an existential, structural blow equivalent to roughly 81% of its pre-war output, costing $305 billion by 2030, or $720 billion on a purchasing-power parity (PPP) basis. Locked out of international capital markets, its output gap fails to close by the end of the decade, triggering a step down to a permanently lower economic path. In contrast, the United States faces a heavily back-loaded bill ranging from $200 billion to $1.1 trillion by 2030. While structurally insulated from the immediate oil shock due to its net energy exporter status, this massive range in projections depends on whether standard cash-budgeting or full multi-decade liabilities—such as veteran care, war-debt interest, and budget ratchets—are present-valued. Meanwhile, Israel sustained a sharp but recoverable macroeconomic shock of $135 billion by 2030, equal to roughly a quarter of a single year's GDP. Advanced air defense mitigated physical destruction, concentrating the cost instead on reserve mobilisation, interception economics, and a transient output gap. Ultimately, this exclusive analysis details how the poorest bystander nations subsidised the conflict's macro cost, marking the 2026 war as one of the most economically disruptive events of the century.