Dow rises 80 points and interest rates are likely to remain low for longer.
Dow rises 183 points after losing 193 points earlier in the session
The Dow tumbles 295 points as US oil settles below $US30 a barrel.
A fresh slide in the price of oil also weighed on sentiment.
Better-than-expected earnings helped bolster equities on both sides of the Atlantic.
Wall Street falls 208 points as crude resumes its slide.
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