Well, actually, no, I don't want war to end. To be conducted with a minimal amount of casualties, yes, if possibly, but not end.
War is the clash of competing ideas, when there is no other way of resolving the differences between ideas. It is, if you will, a proof of a prototype: is a society based on certain ideas stronger than another society based on others?
Competition is necessary for life in an entropic universe. Without it, we grow stagnant, and then weaken. We become unable to adjust to the challenges that will eventually arise, and therefore, ensure our extinction. One of the reasons humanity is so successful is our strong drive to compete, not just against each other, but against anything.
And I don't want pollution to end. If we take pollution as being "Something that changes nature from the state it would exist in without man", then everything we do is pollution. I prefer a more limited definition of pollution being the negative byproducts of positive changes to our lives. I make this rather general to encapsulate such things as noise pollution and etc.
Now, attempting to limit pollution is good, but trying to limit it to the point that it retards industrial and technological progress is suicidal. This planet only has so many resources, and humanity must either regress to primitivism, or expand into the solar system. Taking the middle road, as it were, of a maintained ecological footprint, population, and lifestyle will not only be exceptionally difficult, but lead to stagnation and eventual extinction as we slowly deplete resources and remain unwilling to tap others.
It's also quite likely that a "sustainable ecological system" will require most people to accept a standard of living a good bit below what we experience today. That simply isn't going to happen, not without use of violence on a regular basis against citizenry - a temporary solution at best, since that will just lead to revolution.
Pollution is the result of technological progress. Minimize it as much as possible without damaging industrial capability and technological progress, but never put that goal before the good of humanity.