Russia Ukraine war, page-219711

No, Boris was not the reason a peace agreement was not reached. To attribute that as the cause of the breakdown of talks is simply wrong.

The fact that you parrot the pro Kremlin fictional narrative about "Boris" says you do not understand how negotiations played out over months and what factors contributed to their break down.

The slogan "Boris did it" sums up an inability to understand the situation in any more detail that the slogan you repeat.