The campaign beat

After Champs-Élysées attack, security takes centre stage in election campaign

After an attack in which a police officer was killed on the Champs-Elysées on Thursday night, security and terrorism are thrust to the heart of the French presidential campaign, just two days ahead of the first-round vote. FRANCE 24's French politics editor, Marc Perelman, gives us his insights on how the top four contenders are reacting to this shooting.