Place it on the cut where the alliance map changes, then follow it with the Inception Horn Sound Effect as the camera pulls back to show the full coalition. That order turns a single diplomatic change into a wider turning point for the whole edit.
Über diesen Sound
This is the brief in-game alert from Hearts of Iron IV that plays when a country enters a faction, a short rising chime with a formal, commanding edge. It feels tense and momentous, like a war-room announcement that the balance has just shifted. The sound comes from Paradox Interactive's World War II strategy game, released in 2016, where factions such as the Allies and the Axis shape a campaign.