Reuters | Oil rises after OPEC sources say Saudi crude output fell Reuters NEW YORK (Reuters) - Oil futures gained on Monday after OPEC sources said Saudi crude production unexpectedly fell in July, raising concerns about global oil supplies as the United States prepares to reinstate sanctions against major exporter Iran. US sanctions on Iran could push oil prices above $90 a barrel by year-end, analyst says Oil books a gain amid Iran sanctions and reports of Saudi output drop Oil Rises Amid Signs of Falling Saudi Output |