It's a war crime to make civilians suffer - as Ukrainian cope with harsh winter
In our latest Q&A with military analyst Michael Clarke, he was asked how the most vulnerable in Ukraine are surviving the harsh weather and if attacks on the energy infrastructure amount to a war crime.
Temperatures in Ukraine have dropped as low as -20C this winter.
At the same time, Moscow has relentlessly attacked Ukraine's energy infrastructure, which has cut off heating, electricity and water in different parts of the country, sometimes for days on end.
This is a particularly dangerous situation for vulnerable people.
Clarke said whether it constitutes a war crime depends on the intention.
"In other words, it's automatically a war crime to try to make civilians suffer in a war," he said.
"It's a war crime if the intention is anti-civilian, which in this case it certainly is, I don't think the Russians could possibly defend themselves on the basis that this was in any way military related."
Clarke said Ukrainians are surviving in "family groups".
"They have these resilience centres which are a big tent you can see being put up in the cities," he added.
"They bring heaters, food, rechargers, people bring all their devices and charge them all up as best they can.
"People get some hours in the resilience centres and there's lots of generators."
'No signs of determination diminishing'
But they've still got two more months of the harsh winter to try to get through this, he explained.
"There's no sign that this is actually diminishing the determination of the Ukrainians to somehow survive," Clarke said.
"They don't want to see this war go on, but they're determined that they're not going to crack under this particular offensive this winter - even though this is far and away the harshest of the four winters they've endured so far."
You can watch the full Q&A here...