They're basically raising the banners for a new crusade against the barbarian, slavic, foe.

I think to describe it 'slavic foe' is inadequate and misleading. This is specifically a Russophobic entity. It's about dismantling Russia and getting at the resources.

Second exhibit:

https://ecrgroup.eu/ecr

From the composition of the MEP delegates you will find that exactly 50% are MEPs are from slavic countries with Polish MEP delegates at 25%, being the main actors in this charade.

In other words, it ticks the boxes of Russophobic Poland. The other mixed bag of slavs at 25% and 50% of others (I haven't counted the Balts specifically : )) are there for the ride. I suspect it may be, just maybe, NED whispering in their ears