A thread by Scott Ritter;
For all those scratching their heads in confusion, or dusting off their dress uniforms for the Ukrainian victory parade in Kiev, over the news about Russia’s “strategic shift”, you might want to re-familiarize yourself with basic military concepts.
Maneuver warfare is a good place to start. Understand Russia started its “special military operation” with a severe manpower deficit—200,000 attackers to some 600,000 defenders (or more). Classic attritional conflict was never an option. Russian victory required maneuver. […]
The Russians needed to shape the battlefield to their advantage. In order to do this, they needed to control how Ukraine employed it’s numerically superior forces, while distributing their own smaller combat power to best accomplish this objective.
Strategically, to facilitate the ability to maneuver between the southern, central, and northern fronts, Russia needed to secure a land bridge between Crimea and Russia. The seizure of the coastal city of Mariupol was critical to this effort. Russia has accomplished this task.
While this complex operation unfolded, Russia needed to keep Ukraine from maneuvering its numerically superior forces in a manner that disrupted the Mariupol operation. This entailed the use of several strategic supporting operations—feints, fixing operations, and deep attack.
Plausible.
More on that here.