I think you have asked your question in a rather bizarre way which has caused some of the responses here. It is quite simple I'd have thought, if your flight is cancelled, then assuming that war is not an exception get out of everything(*), they will pay for a hotel until the earliest flight they can offer you (which may be with any airline) which will get you home. They will not pay for hotel time before your cancelled flight. If you turn down an offered flight, they are also not going to pay for hotel time after that flight was due to leave.

(*) other more knowledgable posters can advise if this is the case, but it would makes sense that if travel to a country going to be closed down for weeks, airlines don't have to pay full duty of care for that.