One of the regions 'annexed' by Russia, Putin's men lack full control over Zaporizhzhia. Tanks crushing strongholds in the depths of a forest belt in the Zaporizhzhia direction. The big worry - Zaporizhzhia is the location of Europe's largest nuclear power plant. Importantly, Zaporizhzhia accounts for one-fifth of Ukraine's annual power production. Zaporizhzhia is strategically important to Russia as it is only about 200KM from Crimea.