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: Tensions Escalate Between Israel, Iran JERUSALEM - Iran threatened this week to attack Israel's nuclear facilities. Israel ominously warned that it "knows how to defend itself." Tensions between the two arch enemies have suddenly escalated, underlining the other great enmity that has been bubbling on the sidelines of the Arab-Israeli conflict for more than two decades...

World