I don't believe that's necessary, at all. Free movement is not the same as "dissolve" bordering states. There are challenges on both sides of the border, but l

I don't believe that's necessary, at all. Free movement is not the same as "dissolve" bordering states. There are challenges on both sides of the border, but losing sovereignty isn't one of them. It just takes both states agreeing to the terms, which has been done in numerous states across Europe for many years, without disaster.