"The eurozone isn't working"

The imbalances in the economic strength of euro area countries make the continued function of the single currency area a primary concern, said former US Federal Reserve chairman Alan Greenspan in an interview with the World Gold Council.

He suggests the inequality is largely down to a north/south geographical divide which means the division between the northern and southern EU countries is too big. The bloc's more prosperous nations such as Germany consistently fund the deficits of those in the south, and that simply can't go on, said Greenspan.

"The European Central Bank (ECB) has greater problems than the Federal Reserve. The asset side of the ECB's balance sheet is larger than ever before, having grown steadily since Mario Draghi said he would do whatever it took to preserve the euro," he said.

"And I have grave concerns about the future of the...