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: Balancing the risks in holy Najaf Ayad Allawi #39;s ultimatum yesterday to the rebel Shia cleric Moqtada al Sadr - who is holed up with his fighters in the holy city of Najaf - was notable for one thing: the lack of a deadline. 

World