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: Prime minister announces new 1,700-kilometre security zone off Australia (Canadian Press) Canadian Press - SYDNEY, Australia (AP) - Australia plans to enforce a maritime security zone more than 1,700 kilometres out to sea, far beyond its territorial waters, in a move to boost defences against possible terror attacks on its soil and offshore oil and gas facilities, Prime Minister John Howard said Wednesday.

World