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: Iranian freeze on enrichment will continue Iran notified the UN nuclear watchdog in writing yesterday that it would suspend uranium enrichment and related activities to dispel suspicions that it was trying to build nuclear arms.

World