Day 17: Why is the US Deploying a Marine Expeditionary Unit Amid War on Iran?

• The US is sending a US Marine Expeditionary Unit (MEU) including the USS Tripoli with 2,500 Marines, F-35 warplanes, V-22 Osprey, and transport helicopters;

• Out of 2,500 Marines, only 1,200 are part of a ground combat element, the rest are spread across air combat elements, command, logistics, and other supporting roles;

• The MEU could participate in the seizure of Kharg Island and other critical facilities, board and seize ships, sink ships, augment US regional airpower with its F-35 warplanes, or augment US regional missile forces with its compliment of HIMARS and ATACMS/PrSM munitions;

• The MEU poses a threat to the shipping of energy to China Iran is reportedly allowing through the Strait of Hormuz specifically because of its anti-shipping capabilities created under the Biden administration specifically for war with China;

References:

USNI – USS Tripoli, 31st MEU Heading to the Middle East (Mar. 13, 2026):
https://news.usni.org/2026/03/13/uss-…

BBC – How US Marines are being reshaped for China threat (2023):
https://www.bbc.com/news/world-us-can….

USMC – MARINE AIR-GROUND TASK FORCES (2022):
https://www.usmcu.edu/Portals/218/AY2…