What is the Bab el-Mandeb Strait, and why does the Houthi 'blockade' threat against Saudi Arabia matter?

📌 Summary:

• Context: On July 20, Yemen's Iran-aligned Houthis (control Sanaa and much of northern Yemen since 2014) declared an immediate naval blockade on Saudi Arabia, calling it "an eye for an eye" retaliation for the Saudi-led coalition's siege since its 2015 intervention in Yemen's civil war
• Saudi Arabia condemned the move and said it would take "all necessary measures"; the Saudi-led coalition began measures to protect vessels transiting Bab el-Mandeb; enforcement mechanism unclear
• What Bab el-Mandeb is: "Gate of Tears" in Arabic — a narrow chokepoint connecting the Red Sea to the Gulf of Aden, between Yemen and Djibouti/Eritrea; just 29 km wide at its narrowest, with two channels; the Red Sea beyond leads to the Suez Canal (gateway to Europe)
• Strategic weight (data): ~12% of global trade usually passes through it; in 2024, ~4.1 billion barrels of oil and petroleum products transited (~5% of global total); a full closure to Saudi shipping could cut global oil supply by ~7% (Kpler)
• Why timing matters (causal chain): Saudi Arabia's other main route, the Strait of Hormuz, has been effectively closed since the US-Israel war with Iran (late February); the kingdom has leaned on its ~1,201 km East-West "Petroline" pipeline (Abqaiq to Red Sea port of Yanbu) to move oil via Bab el-Mandeb — a Bab el-Mandeb blockade would threaten this bypass too, putting ~a quarter of the world's oil and gas at risk
• India's vulnerability: A major energy importer, India's energy security is directly exposed to disruptions at both chokepoints
• Precedents: Oct 2016 Houthi missile attacks on the Swift and USS Mason; July 2018 Saudi Arabia briefly suspended oil shipments through Bab el-Mandeb; Nov 2023 onward, sustained Houthi drone/missile/boat attacks on Red Sea shipping (starting with the seizure of Galaxy Leader)

🎯 UPSC Relevance: GS1 Geography / GS2 IR / GS3 Economy — global maritime chokepoints, energy security, West Asia geopolitics.

📝 Prelims Facts:

• Bab el-Mandeb connects the Red Sea to the Gulf of Aden; ~29 km at its narrowest; between Yemen and Djibouti/Eritrea
• ~12% of global trade and ~4.1 billion barrels of oil (2024) transit annually
• The Strait of Hormuz lies between Iran and Oman/UAE
• Petroline (East-West pipeline) runs ~1,201 km from Abqaiq to Yanbu

🔑 Key Term: Maritime chokepoint — a narrow strait or canal through which large volumes of global trade must pass, whose disruption can sharply affect shipping and oil prices (e.g., Hormuz, Bab el-Mandeb, Malacca, Suez).