I would replace the quality of sincerity with honesty, since one can hold a conviction sincerely without examining it, while honesty would require that one subject one's convictions to frequent scrutiny.
Now Europe are experiencing a wave of eroding solidarity, first of certain societies and then entire governments. At the same time, we have two giant new challenges to meet: the migration movement and terror. And then Great Britain is thinking about leaving the EU. That should suffice as a description.