I am planning to get a bus from Split (Croatia) to Podgorica (Montenegro) and then train from Podgorica to Belgrade (Serbia). As far as I know, it is the only international route by train to Serbia at the moment.
Does anyone have experience how to cross the border to Romania/Hungary from Belgrade? I didn’t find any straigth bus.. I only need to cross the border(for example to Timisoara/Szeged) because in Romania and Hungary the train networks are better and it is easy to continue traveling with train to next destination.