walk (a) fine line

Traductions
ходить по тонкой грани
Politicians often have to walk a fine line between being firm and being diplomatic.
Политики часто должны ходить по тонкой грани между твердостью и дипломатичностью.
Définitions
To be in a situation where you must be very careful because you are close to two different, often opposite, ideas or outcomes, and a small mistake could cause problems or failure.
Mots
line

noun
линия
walk

verb
ходить
fine

adjective
тонкий