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In just two and a half months, the war in Ukraine has claimed tens of thousands of lives and flattened countless communities.

The intensity of this struggle has shocked many, even those military professionals across the world who now find themselves watching, trying to understand what lessons to draw about war and its future conduct.

How long could this conflict continue? Could we see a WWI stalemate? Are we witnessing the death of the tank?

Newsnight’s diplomatic and defence editor Mark Urban has been scouring Russian and Ukrainian accounts online and speaking to expert observers to discover more about what those early lessons might be.

This film was produced by Louis Harris-White.