Then they end up marginalizing themselves economically and diplomatically. If they take to violence, then liberal democracies should feel free to meet force with force. But not until then - if you believe in classical liberalism, you should not be willing to throw the first punch, nor to compromise principles out of fear.
If you adopt traditional tribal/nationalist mentalities out of fear of those who already follow them, then you've already lost, while if you make clear what you stand for and live it, you're at least fighting for what you believe in.
If you adopt traditional tribal/nationalist mentalities out of fear of those who already follow them, then you've already lost, while if you make clear what you stand for and live it, you're at least fighting for what you believe in.