Russia has likely lost one-third of its ground combat forces in Ukraine and the forces who remain are depleted and have been unable to make any territorial progress in recent weeks, British intelligence officials said early Sunday.

Russia "has now likely suffered losses of one-third of the ground combat force it committed in February," the United Kingdom’s Ministry of Defense said in an update.

"Russia’s Donbas offensive has lost momentum and fallen significantly behind schedule," the report continued. "Despite small-scale initial advances, Russia has failed to achieve substantial territorial gains over the past month whilst sustaining consistently high levels of attrition."

The UK government also said these losses will "almost certainly" be worsened as tactical and support equipment continues to run out.... Read More: FOX News