What is not cool is that ROOT was "designed" and built by people who had absolutely no idea how to run a large-scale software project. And it shows everywhere - it's one huge monolith that you have to constantly fight to do anything slightly non-trivial. I'm happy that I don't have to use it frequently, though I still have some exposure.
You probably mean "to prevent military tension"? When tension already becomes war, it's sort of pointless to continue economic integration in the hope that it can stop war.