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: Afghan Security on Alert Ahead of Election KABUL, Afghanistan - On the eve of Afghanistan's first-ever direct presidential election, Muslim clerics urged Friday worshippers to embrace democracy, election workers scurried to ready voting booths and 100,000 troops went on high alert across the country.    In Peshawar, Pakistan late Friday, armed men wounded one police officer at a refugee camp polling site just hours before the Afghan refugees were to vote, police said...

World