Leading nations US & China.... LAWL

Then again, that's going to be true in the next decade or so, China that is. Russia isn't the great rival anymore and US is slowly falling from what I can see in taking the lead on things. That space station was super diverse too but I let that pass cause it would be needed when venturing further from just our planet. The time I ever see China and US doing such a feat would be the day China is not a communist party no more.