drive a wedge between someone
US /draɪv ə wɛdʒ bɪˈtwin ˈsʌmˌwʌn/
UK /draɪv ə wɛdʒ bɪˈtwin ˈsʌmˌwʌn/

1.
亀裂を生じさせる, 仲たがいさせる
to cause disagreement or hostility between people
:
•
His lies began to drive a wedge between the two friends.
彼の嘘が二人の友人の間に亀裂を生じさせ始めた。
•
The new policy could drive a wedge between management and employees.
新しい政策は経営陣と従業員の間に亀裂を生じさせる可能性がある。