pool resources to create a space force

usa can afford their own space force 

but many countries in NATO can't afford their own space force 

but NATO could afford it's own space force 

motivations could be international defense 

many countries in EU can't afford their own space force 

but EU could afford it's own space force 

motivations could be international defense

many countries worldwide can't afford their own space force 

but UN could afford it's own space force 

motivations could be global defense 

and so on