Direct:
* Gunboat diplomacy: This is the most common term, referring to the use of military force or the threat of force to achieve diplomatic goals. It implies a forceful and aggressive approach.
* Military diplomacy: This term is broader and refers to the use of military personnel and resources to achieve diplomatic objectives, but it can also encompass more cooperative and collaborative activities.
More nuanced:
* Coercive diplomacy: This emphasizes the use of force or the threat of force to pressure another state.
* Realpolitik: This term emphasizes the pursuit of national interest, even at the expense of morality or international law, and may involve the use of force.
* Power politics: This refers to the use of power, including military power, to achieve national goals.
* Hard power: This is a general term for the use of military, economic, or political power to influence others.
Indirect:
* Deterrence: This refers to the use of military power to discourage an adversary from taking certain actions.
* Military posturing: This refers to the use of military displays and activities to signal strength and resolve.
The best term to use depends on the specific context and the nuances you want to convey.