The arms industry refers to the sector that designs, manufactures, and sells weapons and military technology. This includes firearms, ammunition, missiles, and military vehicles. Companies in this industry often work closely with governments and military organizations to develop products that meet specific defense needs. The arms industry plays a significant role in national security and global politics. Major players include countries like the United States, Russia, and China, which invest heavily in military capabilities. The industry is also subject to regulations and treaties aimed at controlling the proliferation of weapons, such as the Arms Trade Treaty.