Is the pope head of the world's most powerful government? The pope represents over one billion people, his government has a permanent presence at the United Nations and he runs the oldest diplomatic service on earth. <br /><br />We asked the man behind the Vatican's foreign policy to explain how the world's smallest country could house the world's most influential government <br /><br />Click here to subscribe to The Economist on YouTube: http://econ.st/2G6zUG5 <br /><br />Daily Watch: mind-stretching short films throughout the working week.<br /><br />For more from Economist Films visit: http://econ.st/2G6zVK9 <br />Check out The Economist’s full video catalogue: http://econ.st/20IehQk <br />Like The Economist on Facebook: http://econ.st/2G8KyfS <br />Follow The Economist on Twitter: http://econ.st/2G8MEvS <br />Follow us on Instagram: http://econ.st/2G7lTrW <br />Follow us on Medium: http://econ.st/2G5WIpA