Hello. I was just playing my game as Bohemia, on my attempt to get The Bohemians achievement and I was trying to ally Muscovy by RMing them and suddenly a Personal Union window appeared. It's 1560s. I had to fight Poland and Denmark over it and won, getting Krakow and Faroe Islands which I find kind of useful for my invasion of GB. I also own Silesia, Saxony, about a half of Slovakia/Nitra and some other lands in Westphalia. I've got about 30k soldiers (planning to increase the number as soon as my manpower recovers), their development is like 720 or so and they already own some Kazakh and Siberian land. But then there is the problem - their liberty desire is 80-90% and I can't decrease it whatsoever. Is it worth keeping the union? If so, how would I decrease their LD (I am already supporting loyalists and improving relations)?