Oil prices fall from one-year highs on output cut doubts

By Henning Gloystein and Dmitry Zhdannikov SINGAPORE/LONDON (Reuters) - Oil prices on Tuesday fell from one-year highs touched the previous day as there were doubts that a planned production cut would have the desired effect of reining in over two years of global oversupply. Oil prices jumped as much as 3 percent on Monday, with Brent hitting a one-year peak, after Russia and Saudi Arabia both said a deal between the Organization of the Petroleum Exporting Countries (OPEC) and non-OPEC members l