There is a tenuous peace in place between the city-states. Few cities even have the military resources to mount a significant attack on another city while continuing to defend their own borders. Furthermore it has been agreed by all city-states that any attack on an arcology or walled city shall be considered an attack on all city-states. Should such an attack take place, the aggressor will have to face the combined force of all other city-states, who will set aside their differences and unite to destroy whomever dares to attack one of the few remaining outposts for humanity. This pact is formally known as the Inter City-state Alliance. Its terms and a list of its signatories are held in Lavana Free City. The pact has recently been expanded to include a clause regarding extradition of criminals between states and includes the proposed foundation for the creation of an international investigative body (3.2.6).