Euro Founder: Some Countries Will Have to Leave

Germany should stay though, the European Central Bank's former chief economist said

Otmar Issing, a former European Central Bank chief economist, warned that the eurozone could be heading towards fracture in a book calledHow we save the euro and strengthen Europe published this week .

"Everything speaks in favour of saving the euro area. How many countries will be able to be part of it in the long term remains to be seen," said Mr Issing in the book, which is written as a conversation between an economist and a journalist.