Exclusive: I'm in Ukraine now, and this is how it feels

These are dark days for Ukraine. And I mean that, in the first instance, quite literally.

As the bleak skies and bitter cold of winter set in, Russia has renewed its strikes on Ukrainian energy infrastructure in a cruel strategy to break the morale of the nation as it swiftly approaches four years since full-scale invasion by its eastern neighbour.

Power has had to be rationed, and significant pre-scheduled portions of the day and night are without electricity.