Should nations outlaw war as inhumane?

It would be nice but unfortunately its impossible to do. Switzerland is one of the few countries in the world who has been able to pull off avoiding war but even they were close to being invaded by Hitler in WW2 even though they claimed to be neutral. If you make war inhumane & out law it you would also prohibit yourself to defend itself. There will always be war there will always be greed there will always be reasons one country finds to attack another & more often then not a smaller one at that but still there will always be war. banning war would be like saying you should have doors on your house because their made of wood that would ultimately invite crime to your house in some form or another while at the same time living you little option in stopping it when it came. You don't have to start a war to be pulled into it & any involvement would lead to or contribute to inhumane things. If german invaded Switzerland & they fought back it would take Germany longer to take over delaying the victory most predicted & extending the time civilians could be hurt or killed fighting. While if they roll over & gave up they'd end up like France who still suffered even after giving up. So either way they would have suffered & had inhumane things done.