Middle East — 2026-07-17

Iran Instructs Houthis to Prepare Bab al-Mandeb Closure if US Strikes Power Grid, Opening Second Maritime Chokepoint

BLUFConditional on a US strike against Iran's power grid, Houthi attacks on Bab al-Mandeb shipping are likely within 30 days, but absent that trigger the pre-positioned assets function as Iranian deterrent leverage.

Reuters reported, citing three sources, that Iran's leadership discussed directing the Houthis to close the Bab al-Mandeb Strait and has conveyed that request to the group, contingent on a US strike against Iran's power grid 12. A source close to the Houthis told Reuters the group has deployed missiles and drones near the waterway and is awaiting an order to begin attacking shipping 3. The same source said representatives of Iran's Islamic Revolutionary Guard Corps in Yemen would control the timing of any move against the strait 3. The Times of Israel separately reported a source close to the Houthis saying the group is ready to launch missile and drone attacks on shipping near the strait 4.

Analysis
Iran's leadership has directed the Houthis to close Bab al-Mandeb if Washington strikes the power grid, with IRGC representatives in Yemen, not Houthi commanders, controlling launch timing, indicating Tehran retains operational authority over any escalation rather than delegating it. Forward-deployed missiles and drones will likely trigger attacks on shipping within 30 days of a US grid strike but function as deterrent signaling absent that trigger, consistent with a year of Houthi restraint despite maintained capability; the conditional framing may be aimed chiefly at raising the cost of a US strike rather than reflecting a genuine operational plan. Closure would compound Hormuz disruption and strain Saudi Arabia's Yanbu reroute, forcing CENTCOM to split escort and mine-countermeasure assets across two chokepoints. Confidence is low: no independent corroboration of internal Iranian or Houthi deliberations exists, and the triggering strike has not occurred to test whether the threat converts to action. Four-outlet pickup rests on a single Reuters exclusive with no independent primary sourcing.
4 sources
  1. Exclusive-Iran Tells Houthis to Close Red Sea Gateway if US Hits Power Network, Sources Say - Reuters (via U.S. News & World Report)
  2. Iran reportedly tells Houthis to close Bab al Mandeb Strait if US strikes power grid - Long War Journal
  3. Iran instructs Houthis to prepare to close the Bab el-Mandeb Strait - Fox News
  4. Iran tells Houthis to close Red Sea oil route if US hits power network, sources say - Times of Israel

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