Avoidable tragedy? Blame game follows worst ever Channel migrant disaster

A memorial was held tonight in the French port of Calais after 27 migrants drowned trying to cross 34 kilometres of icy water to England. You'll hear grandstanding between Johnson and Macron, but the two sides have cooperated for years over this border. Both sides blame smugglers, but why has there been a recent spike in crossings? And how can they protect the rights of those people who risk their lives without opening the floodgates to uncontrolled migration?