European shares teetered either side of unchanged on Friday, as gains in energy shares on higher crude offset the impact of declining miners, Reuters reported. At 0716 GMT, the FTSEurofirst 300 ,.FTEU3 index of top European shares was up 0.1 percent at 1,156.06 points after trading slightly lower in early deals. Heavyweight oil stocks BP and Total were up 0.1-0.2 percent, while StatoilHydro added most points to the index with a 0.8 percent rise. Oil extended gains above $121, a day after its biggest jump in 3 months on mounting tension between the United States and Russia. Russia, the world's No.2 oil exporter said on Thursday that it would respond with more than just a diplomatic protest to a U.S. deal with Poland to station parts of a U.S. missile defense shield on Polish soil. "Investors are realising that the bear has put its paw on the pipeline, and geopolitical risk is likely to remain a theme for the next month or so," said Justin Urquhart Stewart, investment director at Seven Investment Management.