Final answer:
A unified command is an arrangement that allows multiple agencies to collaborate effectively, coordinating their efforts and resources towards a common goal. It is part of emergency management and exemplifies the choice between multilateralism, like working with the UN, and unilateralism in international relations.
Step-by-step explanation:
In the context of multiple involved agencies, a unified command is an arrangement that allows all agencies with jurisdictional authority or functional responsibility for a particular incident or event to collaborate effectively. This command structure ensures that all participating agencies work together towards a common set of objectives and strategies without compromising their own agency authority, autonomy, or resources. This concept is part of emergency management and is employed in situations such as natural disasters, terror attacks, and large-scale public events.
The decision of whether the United States should work with the UN to carry out anti-terrorism initiatives around the world is indicative of the choice nations have between multilateralism and unilateralism. If the U.S. chooses to abide by UN governance regarding its anti-terrorism strategy, it implies a commitment to multilateral decision-making within a framework that allows each country to retain its sovereignty while pursuing common goals.