I really appreciate your position, but the letter is incredibly weak. I understand that it's aimed at government that won't read it otherwise, but:

You call it "operation", it's not operation, it's war.

You ask to prevent human casualties, but thousands are already dead.

A lot of people signing from companies such as Yandex - a search engine that promotes propaganda and hides evidence-based journalism. From VK - a social network that bans opposition communities and spreads misinformation. You can't have it both ways folks.