Greek reversal helps European shares post biggest rise in 3 years
* FTSEurofirst 300 up 3 pct
* Greek stocks rally on politician's comments
* Oil stocks rebound, led by shorted stocks
* Banks rally on Fed's patient approach (Updates with closing prices)
By Alistair Smout
LONDON, Dec 18 (Reuters) - European stocks surged on Thursday, with the market supported by a rise in Greek shares after the leader of the main opposition party said he was committed to keeping Greece in the euro should his leftist party take power next year.
A tentative rebound in oil, a dovish statement from the Federal Reserve and relative calm in Russian markets helped spur European shares to their strongest daily gain in three years.
The FTSEurofirst 300 index of top European shares closed up 3 percent at 1,356.23 points, its biggest percentage rise since November 2011, extending gains after Greek stocks reversed an early fall.
The Athens Composite Index erased earlier losses to trade 1.5 percent higher after the leader of Greece's radical leftist party Syriza, Alexis Tsipras, told Reuters he wanted a negotiated debt relief solution with the European Union and to keep the country in the euro currency bloc. Continuación...