であれ〜であれ

This construction is used to show that a statement or consequence applies regardless of two possible situations. It emphasizes that the outcome or rule remains true no matter which of the two (or more) options occurs. It is somewhat formal or literary in tone and is commonly found in written prose, discussions, or argumentative contexts. The two items linked by であれ〜であれ are often nouns or phrases that can be in the same grammatical form (e.g., both nouns, or both clauses) and are followed by a main clause that applies to both cases. Note that this pattern is not used for rapid, casual speech; more natural spoken equivalents might use でも or かどうか rather than the double であれ structure, depending on the formality and nuance desired.