“If Russia is no longer able to use any of the ports there, if the Ukrainians are able to isolate it, that big bridge is eventually going to come down.”

Crimea is still the “decisive terrain of the war” and will deter Putin’s ability to control the Black Sea, says Lieutenant General Ben Hodges.

You have been watching Frontline, with Kate Gerbeau, Philip Ingram and Louis Sykes, produced by Times Radio.