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: Aide: Al-Sistani Brokers Najaf Peace Deal NAJAF, Iraq - Rebel cleric Muqtada al-Sadr agreed Thursday to a peace deal presented by top Shiite cleric Grand Ayatollah Ali Husseini al-Sistani to end three weeks of fighting in the holy city of Najaf, according to a top aide to al-Sistani.    Al-Sistani, the most influential cleric among Iraq's Shiite majority, reached the deal in direct talks with al-Sadr in the evening, only hours after making a dramatic return to Najaf...

World