Bill Gates' soccer team defeats the Bantu Caliphate's tennis team, which means King Charles X of Thailand will have to be paired with Emperor Bubba of Japan in the World Wrestling Federation's latest tag-team wrestling match on pay-per-view...
...oh, you mean real wars, not scripted ones?
Okay, King Charles X of Thailand doesn't like the way the media moguls of the United States of Wyoming dominate the world, so he invades the Commonwealth of Rwanda, which he hopes will indirectly do something-or-other...
Okay, Napoleon invades England, the British monarchy and government escapes to Rwanda which ends up being the last outpost of the British Empire and Rwanda invades Canada to steal its hockey team, Canada surrenders in exchange for Rwanda helping Canada get Switzerland's naval bases...