Unlike the Rainbow Five plan, War Plan Red did not envision striking outside the Western Hemisphere first. Its authors saw conquering Canada as the best way to attack Britain and believed that doing so would cause London to negotiate for peace. A problem with the plan was that it did not discuss how to attack Britain if Canada declared its neutrality, which the authors believed was likely (the plan advised against accepting such a declaration without permission to occupy Canadian ports and some land until the war ended). The U.S. decided it should focus on the North American and Atlantic theater of operations first while leaving its Pacific outposts of the Philippines, Guam, and American Samoa alone to fend off any British, Australian, and New Zealand attacks during the early stages of the conflict.