So Ukraine is being asked [View all]

to accept a security arrangement by countries that gave them a security arrangement before that they didn't follow through on.

So to sum it up they are saying "We guaranteed your territorial protection and we're really sorry that we didn't and now a huge part of your land is gone, many thousands have died and thousands of your children have been kidnapped. But we'd really like you to stop fighting the country that invaded you and did all of this. So listen if you agree to stop fighting, maybe give up land and minerals, we'll guarantee your territorial protection for what you have left."

It's like being in a relationship and hearing your partner say "Listen I know this is the 5th time you caught me cheating on you but I promise I'll never do it again."