What is revanchism?

Revanchism refers to a political policy or sentiment advocating for the recovery of lost territory or the reversal of territorial concessions made in the past. It often arises in the context of national identity, historical grievances, and a desire for national pride. Revanchist movements can be associated with various countries and conflicts, frequently manifesting in aggressive nationalism or militaristic rhetoric. The term is most famously linked to France's desire to reclaim Alsace-Lorraine after its loss to Germany in the Franco-Prussian War.