US talk show host Tucker Carlson's interview with Russian President Vladimir Putin began with a rambling half-hour lecture on the history of Russia and Ukraine. Mr Carlson‚ frequently appearing bemused‚ listened as Mr Putin expounded at length about the origins of Russian statehood in the ninth century‚ Ukraine as an artificial state and Polish collaboration with Hitler. It is familiar ground for Mr Putin‚ who infamously penned a 5000-word essay entitled "On the Historical Unity of...