Turmoil in financial markets and concerns over China will prompt a March review of the European Central Bank's monetary policy.
The decision has triggered a rebound in slumping oil prices and global stocks.
It's been an icy week for share markets - the volatility top of the agenda at the World Economic Forum in Davos.
These comments in the Swiss Alps from the chief of the European Central Bank, Mario Draghi, had far-reaching implications.
