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: North Korea Says South #39;s Navy Staged Provocation North Korea accused the South #39;s navy on Tuesday of staging a grave provocation that could lead to a maritime skirmish after South Korean patrol boats fired warning shots to repel navy vessels from the North.

World