This document discusses the challenges in distinguishing between acts of war and acts of terrorism for insurance coverage purposes. It summarizes precedent court cases that have narrowly construed war exclusions and found that terrorist groups are not sovereign entities capable of war. It also outlines the definition and certification process for acts of terrorism under the Terrorism Risk Insurance Act, which requires terrorism coverage be made available. There remains ambiguity around differentiating these concepts, especially for losses under $5 million, and future attacks by groups like ISIS could challenge these definitions.