Because in Veidt's new world peace he would have had to live a life of compromise, knowing about the plan. Rorschach sees good and evil, his mask is black and white - no shades of grey. Veidt's plan makes Rorschach redundant in the world, so he removes the mask, knowing that Rorschach can no longer function in the world, and dies as Kovacs.
Because in Veidt's new world peace he would have had to live a life of compromise, knowing about the plan. Rorschach sees good and evil, his mask is black and white - no shades of grey. Veidt's plan makes Rorschach redundant in the world, so he removes the mask, knowing that Rorschach can no longer function in the world, and dies as Kovacs.
Not necessarily. It could just as well mean that even with that "alien threat", the countries cannot work together and soon they'll have a falling out and become enemies again.