British intelligence said Wednesday that some Russian units facing big losses have returned home or went to neighboring Belarus, while Western officials expressed doubt about Moscow’s pledge to scale down military operations around Kyiv and Chernihiv. “Russian units suffering heavy losses have been forced to return to Belarus and Russia to reorganize and resupply,” Britain’s Ministry of Defense said in a March 30 update. The partial troop withdrawal is proof that Russian forces are having difficulty reorganizing their units in parts of Ukraine and is likely to pressure already strained Russian military logistics chains, British intelligence said. “Russia will likely continue to compensate for its reduced ground maneuver capability through mass artillery and missile strikes,” the source added, with any ramp-up in shelling raising the risk of civilian casualties. The war in Ukraine has killed or injured thousands, and has driven over 4 million people from their homes. Christo Grozev, lead Russia …