By Olesya Astakhova, Ahmad Ghaddar and Alex Lawler LONDON/MOSCOW (Reuters) -OPEC+ is set to agree on Sunday on another modest increase in oil output targets, three sources familiar with the talks said, as the producers' group moderates plans to regain market share due to rising fears of a supply glut. OPEC+ has raised output targets by more than 2.7 million barrels per day – about 2.5% of global supply – since April, but slowed the pace in October and November from larger increases amid predictions of a looming oversupply. New Western sanctions on OPEC+ member Russia are adding to challenges in the discussions, as Moscow may struggle to further raise output after the U.S. and Britain imposed new measures on top producers Rosneft and Lukoil. Eight OPEC+ members – Saudi Arabia, Russia, the U

See Full Page