They were offered an escape corridor but either chose not to use it or were somehow 'encouraged' not to. It is a war of attrition , on Russia's terms at the moment , and combatants are going to get destroyed , brutal as it may be.
The most disturbing thing is the increased mobilization underway in Ukraine , ordered by a group of violence obsessed fanatics who are probably profiting from the carnage.
There are reports of kids getting thrown into the meat grinder already, the jibe that NATO will fight to the last Ukrainian appears to be accurate instead.
Another 100 BILLION will help the project along but it will not solve the problem