Bosnia basicaly doesn't have ports (besides Neum, which is not realy practical), so either Albania / Montenegro / Croatia. Most likely Albania - Kosovo - Serbia route, since it's already established heroin smuggling route.
Most likely Montenegro -> Serbia. Much easier, then going through two other countries, and Montenegro has issues (both election, and previous corruption problems).
Last time I passed through Montenegro I got stoped by two cops and they straight out asked me money (they wanted 20 euros for each), so they didn't suspend my license. (and yes, they were slavic/montenegrins and not Albanians)
I was going 64 khm/h on a 60km/h zone. They are corrupt as hell.
> Most likely Albania - Kosovo - Serbia route, since it's already established heroin smuggling route.
I assume this would require the smuggler to either be a Serbian or Kosovo citizen, or make a handover to a local person in Kosovo? A citizen of a third country cannot enter Serbia after entering Kosovo from a third country. The Serbian authorities will deny you entry and tell you to go back and enter into Serbia from one of the other countries bordering it.
