Oil extends losses as dollar recovers, OPEC cut doubts weigh

By Devika Krishna Kumar NEW YORK (Reuters) - Oil prices fell about 1 percent on Tuesday, extending the previous session's sharp sell-off, as the U.S. dollar strengthened and doubts over implementation of a global deal to cut output loomed. Members of the Organization of the Petroleum Exporting Countries (OPEC), such as Saudi Arabia, appear to be reducing production under a global deal to rein in oversupply but it is unclear whether other big producers like Iraq will follow suit. Iraq, OPEC's sec