That's exactly why the last "war" was World War 2. Since then, we have higher level ordered gentleman agreements that prevent it, as gentleman's agreements are

That's exactly why the last "war" was World War 2. Since then, we have higher level ordered gentleman agreements that prevent it, as gentleman's agreements are actually more beneficial to the collective than absolute, codified ones, such as "war" and "congress" and "laws" and "special military operations..."