CALAIS, France: French police on Tuesday dismantled a camp of 700 to 800 migrants in the port city of Calais, the biggest such operation since the sprawling “Jungle” shantytown was broken up four years ago. Calais continues to attract migrants from the Middle East and Africa who set up makeshift camps along the coast from where they hope to make the passage across the English Channel to Britain. Since January 1, at least 1,317 migrants have been intercepted by French authorities as they tried to reach the UK, some by swimming across the busy waterway.