defending ukraine

as a mere by stander too what is going on in ukraine at the moment and a mere layman does anyone know why this idea the european union and starmer are floating will work .i am talking about at an agreed ceasefire in ukraine do these european ministers think for one second russia will let them put an peace keeping force under the flag of the european union on ukraine soil that arealso nato countries .much we all want too see this war end this idea is so unrealistic from the start and would never be acceptable in russian eyes