It involves leveraging multiple domains to achieve an advantage against the adversary in both strategic competition and armed conflict. As seen in the recent events in Ukraine, threats can change rapidly and come from any directions - including cyber or space.
The nature of the threats we face means that no single armed force, no single government department, and no single nation can defeat these adversaries on their own. Hence, an international collaboration between allied countries and a range of supporting industries is key to mitigating these threats.