OPEC+ has failed to spark an oil price rally with its commitment to halt production hikes in the first quarter of 2026, as fears of a supply glut continue to weigh on both Brent and WTI.- OPEC+ surprised oil markets by announcing a pause in its scheduled return of voluntary cuts throughout Q1 2026, having agreed on a minor 137,000 b/d increase for December 2025.- According to media reports, Russia was the largest proponent of the temporary supply hike pause, giving OPEC+ more time to assess the impact of sanctions on Russian crude production.-…