2.5.1. Section 1: Operational Context. No change from a regular ICD to the operational context section in the IS-ICD.

For reference or comparison, below is what the JCIDS Manual says for the ICD 2021 itself:

2.5.2.1. The purpose of this Section is to provide operational context for the capability identified in the ICD. This information explains how the capability, being concept based and threat informed, contributes to the missions and activities of the Joint Force.