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 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

Saudi Arabia has close security ties with the US; 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 (GCC) members; it is a member of the Peninsula Shield Forces, a joint military force established by the GCC countries with the aim of maintaining security and stability in the region; the force was established in 1982, and its leadership is based in Saudi Arabia

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 (2025)