Depleted Oil Reserves and a Fragile Ceasefire: The Global Economic Risks IMF Chief Gourinchas Warned About

IMF Growth Forecasts Under the Ceasefire and Adverse Scenarios

In its April 2026 World Economic Outlook, the IMF cut its 2026 global growth forecast from 3.3% (January projection) to 3.1% under its "reference forecast" — which assumes a relatively short-lived conflict. Inflation was projected at 4.4% . The IMF presented three downside scenarios depending on how the conflict evolves: weaker, worse, and severe. Under the most severe scenario — a prolonged conflict with sustained disruption of energy supply — the world could tip toward a global recession .

Gourinchas warned in April that "some damage is already done, and the downside risks remain elevated," noting that the ultimate magnitude of the shock depends on the conflict's duration and scale . By late June, he reiterated that the global economy faces "significant downside risks" if the "fragile" ceasefire does not hold . Gourinchas also pointed to broader global headwinds compounding the risk: shifting trade ties, continued policy uncertainty, and the lingering effects of tariff shocks that have already weakened growth prospects .

Challenges to a Lasting Diplomatic Resolution

The ceasefire is described as fragile. Core disagreements between the US and Iran remain unresolved, particularly over Iran's nuclear program and control of the Strait of Hormuz . TD Economics noted that US-Iran talks ended without an agreement on these fundamental issues, raising "doubts about whether the current ceasefire can evolve into lasting de-escalation" .

In summary, Gourinchas's core message is that the global economy is in a precarious position where the one remaining shock absorber — strategic petroleum reserves — is largely spent, leaving no firewall should diplomacy fail.