as [conjunction] [formal] - used to express the degree to which a person or thing is the cause of something described in another part of the sentenceInasmuch as you are (= Because of your position as) their commanding officer, you are responsible for the behaviour of these men.Louise is making the arrangements, inasmuch as anyone is (= but no one has officially taken responsibility for them).
INASMUCH
Meaning of INASMUCH in English
Cambridge English vocab. Кембриджский английский словарь. 2012