The rise of the Fratelli d’Italia party in Italy emboldens the rise in neofascism, nationalism and populism in Europe and around the world.

The centennial demonstrated that a century hasn’t made foreign relations any simpler — in fact, we may be sliding back into old habits. And French President Emmanuel Macron made a serious case for the collective good at a time when the forces of nationalism are dividing the world in the same way they did leading up to WWI.

Leaders and parties that exercise dictator-like control over the governments to which they were elected pose an intense, immediate threat to democracy worldwide. Civil liberties, freedom of the press and global security are at stake.

“I mean, I voted, but why does it matter? London will never listen.” When I asked my new Scottish friend about the United Kingdom’s recent election, he responded with pure ambivalence. He truly...