Talks between Exxon Mobil ( XOM.N ) and Iraq on a multi-billion-dollar infrastructure contract have reached an impasse, Iraqi officials and two industry sources said, in a potential setback to the oil major’s ambitions to expand in the country. FILE PHOTO: An airplane comes in for a landing above an Exxon sign at a gas station in the Chicago suburb of Norridge, Illinois, U.S., October 27, 2016. REUTERS/Jim Young/File Photo More than two years of negotiations on awarding the U.S. firm a project to build a water treatment facility and related pipelines needed to boost Iraq’s oil production capacity have hit difficulties because the two sides differ on contract terms and costs, the officials and sources told Reuters. Unless the differences can be resolved, the project could be awarded to another company in a tender, the officials said, without elaborating on the points of dispute. […]