A move or step or maneuver in political or diplomatic affairs WordNet 3.0 & Open English WordNet

A démarche has come to refer either to: a line of action; move; countermove; maneuver, especially in diplomacy; or a formal diplomatic representation of the official position, views or wishes on a subject from one government to another government or intergovernmental organization. Wikipedia

Concept in diplomatic relations Wikidata

A diplomatic maneuver; one handled with finesse. Wiktionary