"To stop the war" means to bring an end to a conflict or fight between two or more parties. It involves taking actions or making efforts to promote peace, resolve disagreements, and prevent further violence or harm. Full definition
The obvious answer is for the administration to stop its war on coal, but that is unlikely. (globalwarming.org)
That although it did not stop the war, it did have other far reaching effects, which we show in the film, and which are being felt now. (totalpolitics.com)
How about the religious stop their war against everyone who doesn't follow their religion. (religion.blogs.cnn.com)