In the case where a country is at war the government can commander any private property it wants, and there's nothing the owner can do to stop it. The government can commandeer your house, your car, or the iron railings outside your house to make shells out of. The government decides whether you still own something when it's at war, and will use force to take it off you if you resist.
Yes and a gunman can demand "either your money or your life", but that doesn't make the action morally legitimate or make you immoral for claiming that you don't have any money even if you do. You will resists if you wish or submit if you don't want to, but the right to resist is yours whether you exercise it or not. Paradoxically, most highwaymen understand this better than governments do. At least they don't usually claim moral sanction of their actions. Exercising your right may cost you your life, but some choose to die free rather than living unfree. That's actually common. Animals in captivity often live longer than animals in the wild. It's a quality of life issue, and the freedom many of us enjoy today is a result of others choosing quality over quantity of life.
People who don't love freedom don't really understand those of us who do. They don't get why we risked so much to create the Bitcoin market in the first place. It shouldn't work, according to them. But it does and it will, even if it is co-opted by others. We have the protocol, and we can build it again if this instance fails. You can't disinvent a technology. Once it's out there, it's out there forever.