The term "military industrial complex" refers to the relationship between a country's military and the defense industry that supplies it with weapons and other materials. Some synonyms for this term include the "defense industry," "arms industry," and "military-industrial partnership." Other terms include "war economy," "military economy," and "military-industrial complex system." These terms describe the close collaboration between government and the defense industry. While some argue that this partnership is necessary for national security, others contend that it can lead to corruption and a focus on war and aggression rather than peaceful solutions to conflicts. Whatever term is used, the military-industrial complex remains an integral part of the modern state.