veil of secrecy

Translations
завеса тайны
The negotiations were conducted behind a veil of secrecy.
Переговоры велись за завесой тайны.
Definitions
A situation or condition in which information is kept hidden or concealed from others, often to protect sensitive details or maintain confidentiality.
Words
veil

noun
вуаль
secrecy

noun
секретность