自分の立場を

one's position

→ 自分
phrase Rare #40,759
one's position Refers to one's position, standpoint, or stance in a situation. The を marks it as the object of a verb, such as 明らかにする (make clear) or 説明する (explain).
JA: 会議で自分の立場を説明しました。
EN: I explained my position at the meeting.

討論では自分の立場をはっきり述べなさい

Clearly state your position in the discussion.

自分の立場を忘れたようだ

It seems you've forgotten your place.

— तुम्बाड (2018)

彼は自分の立場を明らかにしなかった

He did not make his position clear.

彼は自分の立場を私に説明した

He explained his position to me.