Peace...
If you'd asked the citizens of the Blue Marble Planet about this several years ago, they'd probably say that they don't know such a thing.
Peace was a foreign concept to them, some would say that the Morning Sun Federation embodied peace but many people knew that the kind of peace they advertised was false. They put blind faith into the protective dome of the Last Bastion, thinking it was impenetrable only to be mocked by the Celestials and Hypogeans who could easily shatter it with a casual punch.
Many years ago, the Blue Marble Planet suffered from the assault of foreign races. Corruption spreads far and wide, and only a decent chunk of the land was left for Humanity who were the true children of this world.