They went with the old adage the enemy of my enemy is my friend.
Problem being they use a less threatening organization to help take out an organization that is a bigger threat to both of them. Making the incorrect
assumption that they will then join your side however they say no you need to join them.
Problem over time with this assumption is:
Problem arises that then the less threatening organization now gains more power because of this and becomes your new enemy and the cycle continues to
repeat until you have 2 super power enemies that then can essentially cause a world war.
Edit: To make matters worse they then believe to solve this problem they need a new world order so that the entire world is one nation and there are
no longer any conflicts that can't be handled because the entire planet will come down on one area if they act up.
Problem with that is then it becomes a dictator ship even though it sounds like a good idea you end up with a dictator of the world. Only exception
I could see to this would be is if there were tons of other inhabited planets around us it would be feasible only then because you would still have
different planets watching out for each other.