You need a little more realpolitik in your life. Nations are absolutely competing with each other because we live in a world of limited resources. Recognizing this fact and wanting your nation to come out on top are very normal.
Anti-ICBM tech sucks balls and it only gets worse with new weapons like nuclear cruise missiles.
If we don't try to build a better future, we will realpolitik ourselves into a dystopian one.
Also, nations are fake creations of the elites. The working class is international in scope and we have no quarrel with one another.