Which statement best describes national self-defense under the CJCS Standing ROE?

• A. The act of defending the US; US Forces; but excluding U.S. citizens and their property.
• B. The act of defending the US and US Forces in peacetime only.
• C. The act of defending the US; US Forces; and in certain circumstances, U.S. citizens and their property, US commercial assets, other designated non-US forces, foreign nationals and their property, from a hostile act or exhibited hostile intent.
• D. The act of defending foreign nationals only.

Answer: (C)

National self-defense under the CJCS Standing ROE defines the broad, purpose-driven authority to respond to threats that could impact the United States and its interests. It isn’t limited to defending only U.S. forces; it also covers actions needed to deter or defeat threats to a range of connected entities. In this framework, the protection extends to U.S. citizens and their property, U.S. commercial assets, other designated non-U.S. forces, and foreign nationals and their property, but only in certain circumstances. Those circumstances hinge on real or imminent danger demonstrated by a hostile act or by hostile intent, meaning there is either an actual attack or a credible and imminent threat of one. The emphasis is on proportional, necessary force to prevent or respond to aggression against the U.S. and its interests.

This formulation is broader than just defending military units, reflecting the reality that national security threats can affect civilians, critical assets, and allied partners abroad. It also clearly distinguishes between actual hostilities and imminent threats, guiding actions so they remain within legal and policy boundaries. The other statements fall short because they exclude civilians and property, limit the scope to peacetime, or omit key categories like U.S. forces and US assets.