Can Greece stay in eurozone as currency weakens?
The euro slid to a nine-year low against the dollar as investors predicted the European Central Bank (ECB) may act to stimulate the economy. The euro fell by 1.2% against the dollar to $1.1864, marking its weakest level since March 2006.
Political turmoil in Greece also weighed on the euro, with fears that the general election on 25 January could see the anti-austerity, left-wing Syriza party take control of the country.
The possibility has sparked fears about whether Greece will stick to the terms of its international bailout and stay in the eurozone.
Nigel Cassidy reports.