European Central bank boss Mario Draghi warned on Thursday that downside risks were increasing again and more stimulus might be necessary, causing a sharp move in equity and currency markets.
"It will therefore be necessary to review and possibly reconsider our monetary policy stance at our next meeting in March," Draghi told a news conference, making it clear that things had changed since December as oil prices fell sharply.
The euro fell 0.6 percent versus the dollar on his comments, breaking below the $1.08 level.
U.S. stocks also rallied sharply after his remarks, with Dow futures rising more than 115 points.
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