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: Putin urges Iran to yield to IAEA demands By Reuters, Thursday &lt;b&gt;...&lt;/b&gt; Russian President Vladimir Putin urged Iran on Friday to heed the demands of the UN nuclear watchdog after Tehran defied the United Nations by going ahead with its uranium enrichment programme.

World