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: Troops Raid Homes in Search for UN Hostages American and Afghan forces searching for three kidnapped UN workers smashed their way into a number of Kabul houses today. About 10 people were detained in the pre-dawn operation, but there was no indication the three foreigners had been found.

World