Paris police say a gunman has killed one police officer and wounded another before being killed himself in an attack on the Champs-Elysees. The self-proclaimed Islamic State has claimed responsibility for the attack. It comes just three days before the first round of balloting in France's tense presidential election. What are the implications? Analyses Karthikesu Kumarathasan, a freelance journalist in France and the former News Editor of Uthayan.