Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: N. Korea Calls U.S. Exercises 'War Action' (AP) AP - North Korea said Monday that prospects for talks on its nuclear weapons program are getting dimmer every day and it condemned U.S.-led naval exercises in Japanese waters as an "ultimate war action."

World