pull the strings
US /pʊl ðə strɪŋz/
UK /pʊl ðə strɪŋz/

1.
糸を引く, 裏で操る
to control a situation or people, often secretly or indirectly
:
•
It's clear that someone powerful is pulling the strings behind the scenes.
舞台裏で誰か強力な人物が糸を引いているのは明らかだ。
•
She's always been the one to pull the strings in her family.
彼女はいつも家族の中で糸を引く存在だった。