No state shall engage in any war without the consent of the united states in congress assembled, unless such state be actually invaded by enemies, or shall have received certain advice of a resolution being formed by some nation of Indians to invade such state, and the danger is so imminent as not to admit of a delay till the united states in congress assembled can be consulted: nor shall any state grant commissions to any ships or vessels of war, nor letters of marque or reprisal, except it be after a declaration of war by the united states in congress assembled, and then only against the kingdom or state and the subjects thereof, against which war has been so declared, and under such regulations as shall be established by the united states in congress assembled, unless such state be infested by pirates, in which case vessels of war may be fitted out for that occasion, and kept so long as the danger shall continue, or until the united states in congress assembled, shall determine otherwise.


I see this part of the constitution as making peace in all the 13 states. By obeying this law, no state will wage war against another or against any other nation. The states were urged to consult congress of any conflicts they may encounter from their adversaries before taking action. However, in instances where they are being threated by their adversaries, or in cases where their enemies attack them first, they can go ahead and defend the state.