How does the world police all space faring nations from making unilateral global changes in an attempt to stem climate change or other global issues that may have unintended consequences that may affect the entire planet?

https://www.quora.com/How-does-the-world-police-all-space-faring-nations-from-making-unilateral-global-changes-in-an-attempt-to-stem-climate-change-or-other-global-issues-that-may-have-unintended-consequences-that-may-affect-the-entire