Yeah, with the Russians trying their best to cut communications - I can indeed imagine that and worse.
Actually, come to think of it, canned fish (fish in oil), bread (preferably flat bread), garlic and onions - that is probably what I would get if I wasn't sure about refrigeration. This way you get your food and vitamins - and it won't go bad for a long time.
Actually, I used to work with this guy who was a bio researcher and was into practical experiments. One thing he found is that if you wrap your hand in plastic when handling bread (or just put plastic gloves on) you can get the bread to last for a long time. Reason: you don't implant bacterial culture from your hands on the bread. I have tried it - it seems to work, a loaf of bread can last a week or so.
I have an electricity and my fridge works, so far. But I have some suppy of canned fish, and onion with garlic, of course. I have no flat bread but i have crackers.
Your assertion about bread and plastic have sense, and I can believe it works. In adition, I need to be sure that no one has touched this bread with their bare hands before me. Or, I could bake bread myself.
Now that Russians are further away from Kiev hopefully the lights are going to stay on.
I wonder if you could use a UV light to disinfect bread and other food. I think they actually use it in industrial settings.
https://www.violetdefense.com/blog/2018/9/21/5-ways-that-uv-light-can-help-with-food-safety
https://food.ndtv.com/food-drinks/ultraviolet-light-can-kill-pathogens-in-fruit-1201785
I don't remember where I read it - but some few days ago I read a report that when it comes to bread, human touch is the most significant contributor of mould spores. Wearing gloves when cutting the bread does by average significantly help pushing on the expiry date.
There's a whole microbiome on our skin, so yes, I am sure that too is true.
My friends brought 2000 kg of canned tuna fish over the Ukraine border ... but we're still wondering if tuna is having a good nutrition/weight ratio
I have no idea. But tuna is good overall - easily digestible, and I think there are very few people who are allergic to it.