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: New U.S. Offensive Could Backfire in Iraq  LONDON (Reuters) - Fierce guerrilla attacks in Iraq and  U.S. assaults on rebel bastions have unleashed a new wave of  bloodshed that threatens to discredit the interim government  and undermine prospects for fair elections in January.

World