“Stop where you are means a flood of EU troops into western Ukraine.”
No, it does not.
Those pussies wouldn’t go if Russia agreed to not shoot them.
That's too broad a generalization. SOME troops from EU countries are quite good, and certainly not "pussies". However, their numbers are limited.
SOME Euro leaders are also not pussies, but, all of them, pussies or no, do understand that going against their general population(s) can get them tossed out in pretty short order, and someone less inclined to aid Ukraine is likely to succeed them.
The real problem lies in the general populations. In many EU countries, esp. those more removed from the war by distance, and those most influenced by Putin's propagandist army, the popular support for sending troops is really "not there".
This is not unlike sentiment in the USA, where support for sending US troops as part of an active peacekeeping force is very low. But, here is an interesting question:
I'm not worried about US troops. If ordered to go to Ukraine as peacekeepers, they will go. However, I suspect we all know which FReepers would object the most strenuously to sending US troops to Ukraine as peacekeepers, regardless of what justification President Trump stated. Do you consider those FReepers "pussies"?