Step up military aid to Ukraine significantly. That is the only way to peace. Giving in to russian demands would only lead to a short cease fire, before they launch their next attack.
That so many Germans have bought into russian propaganda is a major hurdle.
He was a pacifist durimg the second world war. He and many were forced to mine resorces. As they refused to fight. As he was an engineer he was eventually reasigned to other work. Aircraft instrament manufacture at smiths.
But at no point did he think the UK should just allow germany to take over.
He just knew he was not able to fight himself. This was a commonf feeling among those conscripted during the second world war. And will always be a risk whe. A mation needs to defend itself from agressors.
Not all of a nations people are best suited to fight.