はあれ

Phrase (usually used in formal writing and formal speech) (Advanced 683)

A phrase expressing the idea “even though there is something”

Equivalent: Even though there is; although there is; there is ~ but

インターフェースに若干の違いはあれ、この二つのプログラムは機能的には全く変わらない。
Although their interfaces are slightly different, these two programs are just the same in terms of their functions.
歴史の違いはあれ、米国には120万を越す非営利団体(NPO)が存在します。
Although their histories are different (literally: there are differences in their histories), there are more than 1,200,000 non-profit organizations in America.
ほとんどの者が、程度の差はあれ、マスメディアの影響を受けていると言える。
One can say that most people are affected by mass media, although there are differences in degree.
レベルに違いはあれ、この課にいる者は全員英語を話せる。
Although their (skill) levels are different (literally: there are differences in their skill levels), everybody in this section can speak English.
海外旅行に興味はあれ、先立つ費用がない。
Even though I'm interested in traveling abroad, I don't have the money for it.
若干の不満はあれ、今の職場を離れるつもりはない。
Even though I have some complaints (literally: dissatisfaction), I don't intend to leave my current job.
今まで自分を使ってくれた上司に対して感謝する気持ちはあれ、非難する気持ちは全くありません。
I feel thankful for my boss, who has given me work to do all this time, and (literally: but) have no intention of criticizing him.

Formation

Nounはあれ
いろいろ問題はあれEven though there are various problems

Notes