break down (someone's) defenses

Translations
сломать (чью-то) защиту
The lawyer's strong arguments helped to break down the witness's defenses.
Сильные аргументы адвоката помогли сломать защиту свидетеля.
Definitions
To weaken or overcome someone's emotional, psychological, or protective barriers, making them more open, vulnerable, or receptive.
Words
defense

noun
защита
break

verb
ломать
break down

verb
сломаться
down

adverb
вниз