Geopolitical & Markets Briefing — 05/21/2026

1. Key Geopolitical Event

The Iran Shock Dominates Global Risk Landscape

The most consequential theme across the past 48 hours is the escalating impact of what markets and policymakers are now openly calling the “Iran shock” — a conflict or major disruption involving Iran that is rippling across energy markets, inflation expectations, and allied economies. Multiple data points converge on this conclusion: