whether [A] or [B]
Expresses that regardless of which of two alternatives is the case, the outcome is the same.
This pattern lists two contrasting items and means "whether it's A or B (it doesn't matter which)." It emphasizes that the result doesn't change no matter which one applies. It is formal and mostly appears in written language or formal speeches, not in everyday conversation.
The two items are usually opposites or alternatives, like 成功 (success) and 失敗 (failure), or 雨 (rain) and 晴れ (sunny). The pattern can be used with nouns as in the examples, or with na-adjective stems. It is not used with verbs or i-adjectives.
In casual speech, you'd instead use something like 〜ても〜ても or 〜にしろ〜にしろ, but であれ〜であれ sounds stiff and literary.