I've been wondering whether nationalism is inherently a left-wing or a right-wing ideology.
Historically, the answer doesn't seem obvious. During the French Revolution, nationalism was largely associated with the Left. It challenged monarchy, aristocratic privilege, and the old dynastic order by arguing that sovereignty belonged to the nation rather than to a king. In that context, nationalism was a revolutionary and emancipatory force.
Today, though, the picture seems much more complicated.
In many countries, nationalism is primarily associated with the Right: conservative movements, anti-immigration politics, cultural traditionalism, or ethnic conceptions of the nation. Examples could include much of the contemporary European far right or various forms of right-wing populism.
At the same time, there are clearly left-wing nationalist movements. Irish republicanism is probably one of the best-known examples, where nationalism has often been intertwined with socialism, anti-colonialism, and labor politics. Similar patterns can be found in other anti-colonial or national liberation movements.
What's even more interesting is that the same national movement can contain both right-wing and left-wing currents.
Ukraine seems like a good example. There is an explicitly right-wing nationalist current, represented by groups such as Azov and similar organizations, emphasizing military traditions, conservative values, and ethnic nationalism.
But there is also a distinctly left-leaning current of Ukrainian nationalism, often represented by younger activists and parts of civil society. Their understanding of national identity is frequently combined with feminism, LGBTQ rights, decolonial theory, and other progressive ideas. Ukrainian feminism, for example, draws on a long tradition of influential women writers and intellectuals, while decolonial studies have become increasingly important in interpreting Ukraine's relationship with the Russian Empire and the Soviet Union.
Am I missing something here, or is nationalism better understood as a politically neutral framework that can be adopted by both the left and the right?
I think you misunderstood what she said.
It's not that Ukraine has no left-nationalism, it's that the left-nationalists do not have the base material support that the right-nationalists have. If that continues to be the case, then the tendency will be for the right-nationalism to over take and eclipse the left-nationalism. That might not happen, but it is significantly likely. This doesn't even have to be about international support - within Ukraine itself, the right-nationalists have a strong presence in the military and support from politicians. I'm not too current on the present state of Ukraine, but I haven't heard of anything remotely similar for their left-nationalists.