Has Russia’s invasion of Ukraine gone wrong?

We thought Russia’s invasion would overwhelm Ukraine within 72 hours. A week on Moscow’s forces have claimed control of just one city.So what’s gone wrong for the Kremlin? Could old maps, and archaic radios be part of Russia’s problem?We assess how much military capability each side has lost from the battlefield, and what cards Ukraine has to play as cities come under siege.President Putin’s nuclear option includes battlefield weapons, would he really use them and how devastating would that be?Plus why Defence Intelligence has come out of the shadows and into the limelight, as part of the UK’s response.