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: Bush: Validity of Ukraine Vote in Doubt (AP) AP - President Bush declared Friday that charges of voter fraud have cast doubt on the Ukrainian election, and warned that any European-negotiated pact on Iran's nuclear program must ensure the world can verify Tehran's compliance.

World