revanchism
noun /rɪˈvæntʃɪzəm/, /rɪˈvænʃɪzəm/
/rɪˈvæntʃɪzəm/, /rɪˈvænʃɪzəm/
[uncountable]- a policy of attacking somebody who has attacked you, especially by a country in order to get back landWord Origin1950s: from French revanche, ‘revenge’ + -ism. The form revanchist dates from the 1920s.