Hi Brad,
On future encounters with foreign women that you may meet in Montenegro or some other country, simply approach them as you would a woman from your home country of Scotland.
Regardless of ethnicity or nationality, there is a general rule of civility when it comes to approaching a stranger.
Greet them, introduce yourself and proceed to ask them something that relates to the location that you are in.
If the woman is comfortable with you, the conversation will consequently segue to other topics of mutual interest and this could lead to an opportunity to ask her out on a date.