At the end of the interview the list of questions should be checked to make sure no important questions have been omitted.
The interviewee can be asked about their vision of the future. Will there be significant change in the region in the sense that new problems will emerge and/or that capacities will be developed? What will be the major drivers or barriers?
To conclude the interview the interviewee can be asked whether they consider all relevant issues have been addressed or whether they would like to add any other information or provide additional data.