Denounce now has a confirmation popup

android/assets/jsons/translations/template.properties

@@ -72,6 +72,7 @@ We have encountered the City-State of [name]! =
 Declare Friendship ([numberOfTurns] turns) = 
 May our nations forever remain united! = 
 Indeed! = 
+Denounce [civName]? = 
 Denounce ([numberOfTurns] turns) = 
 We will remember this. = 
 

core/src/com/unciv/ui/trade/DiplomacyScreen.kt

@@ -251,8 +251,10 @@ class DiplomacyScreen(val viewingCiv:CivilizationInfo):CameraStageBaseScreen() {
                     && !diplomacyManager.hasFlag(DiplomacyFlags.DeclarationOfFriendship)) {
                 val denounceButton = "Denounce ([30] turns)".toTextButton()
                 denounceButton.onClick {
-                    diplomacyManager.denounce()
-                    setRightSideFlavorText(otherCiv, "We will remember this.", "Very well.")
+                    YesNoPopup("Denounce [${otherCiv.civName}]?", {
+                        diplomacyManager.denounce()
+                        setRightSideFlavorText(otherCiv, "We will remember this.", "Very well.")
+                    }, this).open()
                 }
                 diplomacyTable.add(denounceButton).row()
                 if (isNotPlayersTurn()) denounceButton.disable()