意向形 => volitional form​ N4
~が故 => therefore; consequently​; because of; due to ~ N1
Cause, reason
が必要 => need; necessary N4
という意味だ => This means... N4
必要がある => Need/Need to N4
必ずしも~とは限らない => Not necessarily; not always N3
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
この / その / あの => this / that N5
Spatial relations
ように言う/頼む/注意する/伝える => to convey; to report; to transmit; to communicate; to tell; to impart; to propagate; to teach. N3
ものの => but, although N2
ものの => but, although N2
Things do not match the prediction
その...その => Every... N1
Happens next