War, Neutrality and the UN Charter: State Practice in the Iran Conflict

UNSC Resolution 2817, co-sponsored by 135 states, reaffirmed navigation rights for states not party to the hostilities; Switzerland (reported 13 Mar 2026) and Sri Lanka (4 Mar 2026 incident) independently determined the conflict qualifies as a state of war and invoked neutrality. Switzerland has denied US flyover requests and halted war‑material export licences to the US, while Sri Lanka interned an Iranian warship and refused US aircraft landings; Iran announced closure of the Strait of Hormuz and has mined/attacked merchant shipping. These legal determinations preserve third‑state neutral protections under Hague law but materially elevate geopolitical, shipping, and energy risk for portfolios exposed to those sectors.

Analysis

Recognition that neutrality and Charter law are being actively invoked by third states creates durable, legal frictions that will outlast headline escalation. Expect a persistent, multi-month increase in war-risk premiums, denied overflight/port access volatility and export-control frictions that raise effective transport costs by a structural 10–25% on affected lanes (Strait of Hormuz, Persian Gulf feedering) until clear de-escalation or maritime security assurance is delivered.

Supply-chain second-order effects: commodity flows that depend on short transits (LNG, refined products, ro-ro supply chains for high-value manufacturing inputs) are most vulnerable; firms with just-in-time inventory and single-source ME suppliers face 4–12 week outage tail risk. Insurers and specialized shipping owners capture most of the near-term cash uplift (premium income + spot charter rate spikes), while broad logistics integrators absorb margin compression from rerouting and fuel/insurance pass-through limitations.

Policy/legal durability is the wild card: third-state neutrality determinations make reversible military escalations politically costly and can harden export controls/sanctions over months to years, advantaging domestic sourcing and regional inventory buildup. A fast diplomatic patch (days–weeks) would crater short-duration option trades; absent that, market-implied probability of protracted disruption pushes into a 3–9 month pricing regime for freight and defense demand premiums.

Key Decisions for Investors

• Tanker play: Long STNG (Scorpio Tankers) — buy a 3-month call spread (buy 1x 15% OTM call, sell 1x 40% OTM call) sized 1–2% portfolio. Rationale: captures spot tanker rate spikes and war-risk premium with defined downside (max premium). Exit/hedge: close if Brent or Baltic Dirty Tanker index drops 25% from peak within 30 days.
• Defense convexity: Tail-risk long on LMT or RTX — buy 6–12 month at-the-money calls (or 9–12 month call calendar) sized 0.5–1% portfolio. Rationale: asymmetric upside from rearmament orders/export approvals and replacement demand; limited premium loss if short-lived. Take profits on 25–40% price appreciation or cut if a UN-backed ceasefire is announced within 30 days.
• Insurance/reinsurance capture: Long AXS and ARGO — purchase 3–6 month calls or small-sized equity positions (0.5–1% each) to capture war-risk premium repricing in marine and specialty casualty lines. Risk: single large loss could offset premium gains; use 15–20% stop-loss and monitor reported insured-asset losses weekly.
• Pair: Long tanker/insurer vs short logistics integrators — long STNG + AXS vs short FDX (buy 3-month puts sized to net zero cash at risk). Timeframe 1–3 months. Rationale: differential impact of insurance/freight upside vs reroute/fuel cost squeeze on express integrators. Close if freight indices normalize for 10 consecutive trading days.