In Saudi Arabia, the Saudi Arabian Armed Forces (SAAF) are divided into the regular forces under the Ministry of Defense and the Saudi Arabian National Guard (SANG); the regular forces are responsible for territorial defense, although they can be called for domestic security duties if needed; they include land, naval, air, air defense, and strategic missile forces; the Land Forces have approximately 15 combat brigades which include a mix of armored, aviation, light infantry, mechanized or motorized infantry, royal guards, and airborne/special forces, plus separate battalions of artillery; the Naval Forces are undergoing a major acquisitions and modernization program; its principal warships are approximately 16 frigates and corvettes, with an additional four frigates on order; the Air Force is the largest and one of the most modern in the region, with over 350 combat aircraft from Europe and the US with more on order; the Strategic Missile Force manages Saudi Arabia’s ballistic missile inventory, largely acquired from China

the SANG is responsible for both internal security and external defense; its duties include protecting the royal family, guarding against military coups, defending strategic facilities and resources, and providing security for the cities of Mecca and Medina; the SANG is primarily comprised of tribal elements loyal to the Saud family and is comprised of brigades of light infantry, mechanized or motorized infantry, and security forces; it is supplemented by combat helicopter units and tribal levies/militias known as Fowj

the US is Saudi Arabia’s closest security partner; the SAAF conducts bilateral exercises with the US military and hosts US forces; the US has participated in a cooperative program to equip and train the SANG since 1973; much of the equipment for both the regular forces and the SANG has been acquired from the US; Saudi Arabia also has defense relationships with China, France, India, the UK, and fellow Gulf Cooperation Council members

in 2015, Saudi Arabia led a military intervention into Yemen by a coalition of Arab states in support of the Republic of Yemen Government against the separatist Houthis; Saudi forces from both the Ministry of Defense and the SANG participated in combat operations in Yemen; Saudi Arabia also raised and equipped paramilitary/militia security forces in Yemen--based largely on tribal or regional affiliation--to deploy along the Saudi-Yemen border (2023)