Je Nique vos Merdiers
Hydraulic Fluid
War has been the single most powerful force in driving technological advancement. Like it or not, it's true.
Believe it or not, prove that it's true.
I can't prove it, but I can give some good arguments.
War is competition. Innovators are necessary in order to technologically better the enemy.
England's highly advanced Navy was a result of going to war with other nations.
The need for movement of troops and goods allowed for the steam engine to be created.
Nuclear weapons were developed in wartime, which set the stage for other nuclear technologies.
And let us not forget the space race which happened due to competition between Russia and the USA during the Cold War.
For ******** sake, the internet is a resultant of military technology.
Competition is necessary when it comes to development. China was pretty sustainable for a very long time - they did not need to develop anything new. That was, until England took them over. England had the technology to occupy China because Europe's been at was for... pretty much forever. China - they built a wall, yes. But after Mongols and Huns, they were pretty chill.
Thus, I believe it is a fair and sound argument to say that war has been (if not the single most powerful) one of the most powerful driving forces for technological advancement in all of history.
Now in response the original question.
Was in unfortunate, but it is sometimes necessary.
Necessary in terms of going to "help our friends overseas"? No. I think that's got to be the biggest ideological propaganda out there. Let's go kill eachother to save our friends. Bullshit.
It is necessary for self defense. Humans are violent creatures, and even if you're so wonderful a person you can be a conscientious objector, by no means is everyone.