After studying in Madrid and Great Britain , he became professor of surgery at the American University of Beirut . In 2000, he was president of the Order of Physicians of Lebanon when he was elected Maronites deputy of Beirut on the list of the former Prime Minister Rafic Hariri .  
He was one of Hariri's closest personalities and one of the pillars of the Future Movement .  His name was also cited as a replacement for the President of Lebanon . 
Khoury is now one of Saad Hariri 's closest advisers and a spokesman for the March 14th forces.  He is fluent in English, Arabic and Spanish.