India, May 19 -- A Pentagon-linked report submitted to the US Congress has acknowledged that Russia continues to maintain strategic and operational superiority over Ukrainian forces, reinforcing mounting concerns inside Washington and NATO that the conflict is increasingly tilting in Moscow's favor.

The assessment, prepared by the Special Inspector General for Operation Atlantic Resolve, stated that Russian forces have preserved battlefield dominance through "superiorities in numbers of equipment and manpower," a rare public admission from a US defense oversight body that highlights the widening imbalance on the frontlines.

The report said Ukraine's armed forces are struggling with severe shortages of ammunition, military equipment, an...