Long, long ago, I visited Yugoslavia (as it was at the time). I would like to see it again and an attractive idea is to visit all of the successor states. Is a night or two in each capital with travel between them by bus or train feasible? At a guess, it would not be currently advisable to travel directly between Serbia and Kosovo but could I easily visit both if I entered via a third country.
A couple of successor states are now EU so I expect that I will have no problems visiting them. Can I make a visa free short visit to all of the others?
I am a dual British / Irish (hence EU) citizen. I expect that my Irish passport would be preferable for this trip. Or would it be a good idea to carry both so I could use a different one for Serbia and Kosovo?