The question is whether any or all will be exchanged for Russian prisoners.
This is exactly the purview of the red cross. They should work with the UN to house captured prisoners from both sides of a conflict obviously in separate compounds. Make sure they get good medical care. Let their families visit them. Make arrangements for prisoner swaps. Plenty of press access. With all these peaceloving weenies who keep asking why we can’t all just get along, you’d think this would already be an ongoing program.