Turkey-Europe Row Deepens, But Germany Wants Ankara Onside

Relations between Turkey and Europe took a nosedive this week after many EU countries objected to visits by Turkish ministers campaigning ahead of a Turkish referendum on constitutional change. Ankara wants to drum up support among the millions of Turks living in Europe to give President Recep Tayyip Erdogan more powers, which could see him remain in office until 2029. Henry Ridgwell reports from London.