Accountability systems — what is measured, how it is measured, how results are reported, and the regulatory consequences of those results — drive behaviors and affect school cultures. (crpe.org)
And there are major economic and diplomatic consequences of those results, as countries and corporations vie for new shipping routes and exposed resources. (businessinsider.com)
Furthermore, many people grew unsatisfied with the consequences of the previous enlargements, the difficulties in implementing new policies and moving the EU forward, the imbalances and huge gap in income between old and new members and the political consequences of the resulting migrations, etc. so I would guess that everybody will be extra cautious regarding any future new membership. (politics.stackexchange.com)