Wie nennt man Weißrussland in Ihrer Sprache?

В Германии движение пошло, уже официально заявили что будут использовать Belarus.

Romania definitely calls Belarus “Belarus” or “Bielorusia”. “Rutenia Albă” (“White Ruthenia”) would only be mentioned in a historical context

Ну вообще то историческое название по литовски Gudija.

I dont get it, could anyone explain it, which one is better ?

In Poland its called Białoruś – which translates to White Ruthenia.

And its an geographical name that predates Russia.

Same as there used to be Red Ruthenia, Kyiv Ruthenia and more. Its the Russia name that cames from it.

Білорусь / Bilorus

I’ve heard there’s a small discussion among Ukrainian linguists and similar circles about possibly changing the name Bilorusʼ .
In my opinion, the Ukrainian form Bilorusʼ doesn’t actually come from the Russian Byelorussiya, but rather because writing Bilarusʼ would be grammatically incorrect in Ukrainian — it simply doesn’t fit the language’s rules.
So right now, there are basically two options: to keep Bilorusʼ as it is, or to use the historical name Bila Rusʼ. However, in my view, Bilorusʼ is still the better option

Чуў, што ёсьць невялікая дыскусія ў колах лінгвістаў украінскай мовы і г.д. пра тое, што можна было б перайменаваць назву Беларусь.
Як на мяне, форма Білорусь ва ўкраінскай больш паходзіць не ад «Белоруссія» з расейскай, а таму што, напісаўшы Біларусь, гэта было б некарэктна адносна ўкраінскай мовы — так няправільна.
Так што цяпер, можна сказаць, ёсьць два варыянты: пакінуць Білорусь або называць гістарычна, як і раней, Біла Русь, аднак, як на мяне, лепш усё ж Білорусь

Республика Белоруссия

In Serbian spoken in Bosnia and Herzegovina and Montenegro it’s Bjelorusija / Бјелорусија, in Serbian spoken in Serbia it’s Белорусија / Belorusija, in both it means the same: White Russia.

Have been living in France for a few years by now
„Biélorussie“ isn’t the only option, there are actually two words.

„Biélorussie“ and „Bélarus“

The difference is that the former is feminine, and the latter is masculine.
Although it does seem like „Biélorussie“ is more popular.

Белоруссия.

白罗斯（This is the correct reference translation provided by the Belarusian Embassy, but it is rarely used.）/白俄罗斯（For historical reasons, with no ill intent.）