Red Sea / Houthi Escalation

Houthi attacks on Red Sea shipping paused alongside the Gaza ceasefire in late 2025, but Suez transit volumes remain 47% below the 2023 baseline and the recovery thesis has been materially complicated by the Hormuz crisis. Through late May and into June 2026, the collapse of Iran ceasefire talks, Trump's uranium enrichment ultimatum, and a sequence of diplomatic escalations made Red Sea normalisation conditional on a broader trilateral settlement. Brent reached $111 on day 78 of the Hormuz closure before retreating through a series of diplomatic signals. The US ended the Hormuz blockade on 19 June, tracker data confirmed traffic climbing on 20 June, and Brent settled at $80.59; however, Iran re-closed the strait on 21 June, confirming the MOU was a ceasefire rather than a structural settlement. Iran's Lebanon condition, the structural independence of the Houthi threat, and the embedding of the dark tanker toll regime mean no comprehensive settlement governing Red Sea interdiction has emerged. NthEffect maps the cascade from disrupted freight routes through tanker rate compression, fragmented supply chains, and goods-inflation transmission into Europe's import-heavy economies, alongside the defence-spending re-rate accompanying sustained chokepoint risk across two maritime arteries simultaneously.