The word for today is…
revanche (noun) -
: revenge, especially : a usually political policy designed to recover lost territory or status
Source : Merriam-Webster
Etymology : Revanche first appeared in English in the mid-19th century, deriving, along with our noun "revenge," from the Middle French verb revenchier ("to revenge"). The word developed its specific political application in the years following the Franco-German War (1870-71), which resulted in France losing the territory known as Alsace-Lorraine to Germany. (The territory was returned to France following World War I and then twice switched hands again during World War II.) Although "revanche" appears occasionally in English today, you are more likely to encounter its relatives "revanchism," which refers to a government's policy of revanche, and "revanchist," referring to a follower of such a policy. These words did not appear in English until the 20th century.
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