Realpolitiks is a term that refers to politics, diplomacy, and foreign policy that are based on practical considerations rather than ideology or morality. It is a word that is commonly used in international relations and diplomacy, but it is not the only term that can be used to describe this approach.
Some other synonyms for realpolitiks include pragmatic diplomacy, practical politics, Machiavellianism, strategic realism, and practical or pragmatic foreign policy. These words all refer to a pragmatic approach to politics and foreign relations that prioritizes strategic considerations over moral or ideological principles.
Overall, whether you use the term realpolitiks or one of its synonyms, these words all describe a practical and strategic approach to politics and diplomacy that prioritizes the pursuit of national interests over ideological goals.