Its a hard to describe situation, but if you can imagine a man like Carl Sagan – someone who was a massive advocate of space exploration and science in general.
He once described The Cold War –
“The nuclear arms race is like two sworn enemies standing waist deep
in gasoline, one with three matches, the other with five.”
Someone who sees beyond the wars fought for oil and holds humanities survival above everything; this person knows that the only way to achieve this survival is if we all come together to overcome our problems through science.
I am describing a 'world-view', an ideology if you like.
Perhaps this quote can better explain the situation :
When you're finally up at the moon looking back on earth, all those
differences and nationalistic traits are pretty well going to blend,
and you're going to get a concept that maybe this really is one world
and why the hell can't we learn to live together like decent people.— Frank Borman, Apollo 8, Newsweek magazine, 23 December 1968
Edit: I will include an example to better describe the word I'm looking for.
He carries out his duties in an extremely adjective manner
Best Answer
This is fascinating. It's hard to find words that don't reference religion, which isn't the intent of your question. (E.g. "humanist".) I'm not sure pacifist works, either, since it's specifically focused on war and peace, admittedly issues critical to human survival. One possible solution is "omnist", which is also related to religion. But the OED's second definition seems to approach your goal: "a person who believes in a single transcendent purpose or cause uniting all things or people". Not exactly what you're asking, but it's perhaps close.