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: Anniversary of UN bombing puts spotlight on security problem for the United Nations UNITED NATIONS (AP) A year after the bombing of UN headquarters in Baghdad killed 22 people, the United Nations remains a target for attacks in Iraq and UN staff angrily allege that major security ...

World