Why is the U.S. attacking Iran? Here's what the Trump administration has said motivated the strikes.

Market structure: Energy producers (XOM, CVX, large national oil companies) and aerospace & defense contractors (RTX, LMT, NOC, ITA ETF) are immediate winners as a supply shock and higher defense spending shift pricing power to suppliers of crude and weapons; shipping operators and airlines (JETS, AAL, DAL) are direct losers as Strait of Hormuz disruption threatens ~20% of seaborne oil and forces rerouting. Competitive dynamics: Upstream cash margins expand (breakeven differential widens by $10–$30/bbl if Brent sustains >$95), advantaging integrated majors over refiners in the short run; freight rates spike, benefiting tanker owners but hurting container shippers and just-in-time retailers.

Risk assessment: Tail risks include escalation to wider Gulf conflict (high-impact low-probability) that could sustain Brent >$130 for months, or a rapid diplomatic de-escalation that collapses a >20% realised-volatility spike; expect immediate market moves in days, sustained commodity repricing over weeks–months, and policy/defense budget shifts over quarters. Hidden dependencies: insurance market capacity, secondary sanctions on banks/shippers, and global index rebalances can amplify moves; catalysts to watch are OPEC+ reactions, US SPR releases, and any closure of Hormuz >72 hours.

Trade implications: Tactical long energy and defense, short travel/logistics and EM currencies tied to oil importers. Use concentrated option structures to express views: buy 3-month Brent call spreads and 2–3 month call spreads on XLE for upside while funding with short airline put spreads to monetize elevated volatility; add/exit positions based on Brent thresholds ($95/$110) and concrete supply-disruption duration (>72 hours triggers adds).