If a movie is banned in its home country, can distributors in other countries legally publish it? For example can it be streamed on Netflix or distributed as DVDs elsewhere except the home country?
Movies, as property, are not legal or operating entities, and thus don't have "home countries". So movies themselves are not subject to the laws of any given country.
But whoever owns (or is making) the movie is subject to the laws of at least one, and often multiple, countries. This allows pressure to be brought against the owners - say, fines, jail time, or just revoking access to certain resources - which may affect decisions about distribution or creation. Treaty ties and traditional relations may also expand the "reach" of a country's influence. So whether a film is distributed in a given location is whether it is legal (and practical) to do so for whoever owns it.
Note this only applies to a legal release - black market releases (say, copyright piracy) are an attempt to subvert this, even in the "home" country of the owner.
Short answer: Yes. Long Answer: Politics (and copyright ownership) is complicated.