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: US for stronger defense ties with India: Rumsfeld The United States is keen on strengthening its growing defense ties with India, which currently encompass a wide range of military-to-military exchanges and joint exercises 

World