BAGHDAD (Reuters) -Exxon Mobil signed an agreement with Iraq on Wednesday to help it develop its giant Majnoon oilfield and expand oil exports, government officials and sources said, marking the U.S. major's return to the country two years after leaving. The non-binding agreement with Exxon, a U.S. major, follows a string of deals with other oil companies, including Chevron, BP and TotalEnergies, as Iraq seeks to accelerate oil and gas production by offering more generous terms. Iraq holds some of the wo ...