[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
いかんでは,いかんによっては => Considering A, depending on A N1
Based/focused/depending on
あかつきには => After A then B N1
Time, Situation
ずにはいられない/ないではいられない => Can't help but A; A is unavoidable N2
Will, Decision, “Doing”
つつ/つつも => While A, B. Although A (is beng done), B N2
Information, Report
によらず => Regardless of A N1
Based/focused/depending on
には[及「およ」]ばない => There is no need to A N1
Need/Requirements
とは限らない => A is not 100% N3
Information, Report
てばかりはいられない => Cannot always A N2
Needs, Requirements
とは[裏腹「うらはら」] => Contrary to A, opposite of A, ... N1
Contrast/Surprise
はもちろん/はもとより => Although A is given/obvious; B N3
List, Examples
いかんにかかわらず,いかんによらず => Regardless of A (A is a reason, response, result) N1
Based/focused/depending on