You need to listen to the Borderlands podcast with Iraq veteran and Kyiv tech startup founder Sam Cook, my Riga Business School colleague , retired Lt Col. Glen Grant, who worked for the Ukrainian MoD since 2014 and special ops veteran David Simms: https://m.facebook.com/story.php?story_fbid=471425721352377&id=656281164
No trust = no information sharing = no command and control over combined operations = defeat.
3 weeks in Russians have 85% of dead as 10 years in Afghanistan.
Listen then form your opinion.
They podcast every Thursday.