Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs

E463104

United States Department of Defense position civilian office

The Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs is a senior U.S. Department of Defense official responsible for policy and oversight related to homeland defense, defense support of civil authorities, and security cooperation within the Western Hemisphere.

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All labels observed (2)

Label	Occurrences
Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs canonical	3
Under Secretary of Defense for Policy on homeland defense and hemispheric affairs	1

How this entity was disambiguated

This entity first appeared as the object of triple T4721264 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs
Context triple: [Office of the Under Secretary of Defense for Policy, oversees, Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs]

A. Assistant Secretary of Defense for International Security Affairs
The Assistant Secretary of Defense for International Security Affairs is a senior U.S. Department of Defense official responsible for overseeing defense policy and security relationships with foreign nations and international organizations.
B. United States Deputy Secretary of Defense
The United States Deputy Secretary of Defense is the second-highest-ranking official in the U.S. Department of Defense, responsible for overseeing its day-to-day operations and acting as the principal deputy to the Secretary of Defense.
C. Assistant Secretary of Defense for Special Operations and Low-Intensity Conflict
The Assistant Secretary of Defense for Special Operations and Low-Intensity Conflict is a senior U.S. Department of Defense civilian official responsible for overseeing special operations forces and policies related to irregular warfare, counterterrorism, and related missions.
D. Under Secretary of Defense for Policy
The Under Secretary of Defense for Policy is a senior civilian official in the U.S. Department of Defense responsible for developing and overseeing national defense policy and strategic guidance.
E. Assistant Secretary of State for Political-Military Affairs
The Assistant Secretary of State for Political-Military Affairs is a senior U.S. State Department official who oversees security assistance, defense trade, and political-military policy coordination between the United States and foreign governments.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs
Target entity description: The Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs is a senior U.S. Department of Defense official responsible for policy and oversight related to homeland defense, defense support of civil authorities, and security cooperation within the Western Hemisphere.

A. Assistant Secretary of Defense for International Security Affairs
The Assistant Secretary of Defense for International Security Affairs is a senior U.S. Department of Defense official responsible for overseeing defense policy and security relationships with foreign nations and international organizations.
B. United States Deputy Secretary of Defense
The United States Deputy Secretary of Defense is the second-highest-ranking official in the U.S. Department of Defense, responsible for overseeing its day-to-day operations and acting as the principal deputy to the Secretary of Defense.
C. Assistant Secretary of Defense for Special Operations and Low-Intensity Conflict
The Assistant Secretary of Defense for Special Operations and Low-Intensity Conflict is a senior U.S. Department of Defense civilian official responsible for overseeing special operations forces and policies related to irregular warfare, counterterrorism, and related missions.
D. Under Secretary of Defense for Policy
The Under Secretary of Defense for Policy is a senior civilian official in the U.S. Department of Defense responsible for developing and overseeing national defense policy and strategic guidance.
E. Assistant Secretary of State for Political-Military Affairs
The Assistant Secretary of State for Political-Military Affairs is a senior U.S. State Department official who oversees security assistance, defense trade, and political-military policy coordination between the United States and foreign governments.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	United States Department of Defense position ⓘ civilian office ⓘ
advises	Secretary of Defense on homeland defense policy ⓘ Under Secretary of Defense for Policy on homeland defense and hemispheric affairs ⓘ linked to: Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs
appointedBy	President of the United States ⓘ
appointedFor	leading DoD policy on homeland defense and hemispheric affairs ⓘ
collaboratesWith	Department of Homeland Security ⓘ linked to: United States Department of Homeland Security Federal Emergency Management Agency ⓘ foreign defense ministries in the Western Hemisphere ⓘ state and local governments in the United States ⓘ
confirmedBy	United States Senate ⓘ
country	United States of America ⓘ
establishedFor	coordinating homeland defense policy across the Department of Defense ⓘ strengthening defense relationships in the Western Hemisphere ⓘ
focusesOn	civil-military coordination during domestic emergencies ⓘ defense of the U.S. homeland from external threats ⓘ regional security cooperation in the Americas ⓘ
hasAbbreviation	ASD(HD&HA) ⓘ
hasAuthorityOver	Office of the Deputy Assistant Secretary of Defense for Homeland Defense Integration and Defense Support of Civil Authorities ⓘ Office of the Deputy Assistant Secretary of Defense for Western Hemisphere Affairs ⓘ linked to: Office of the Assistant Secretary of Defense for International Security Affairs
jurisdiction	United States Department of Defense ⓘ linked to: Department of Defense
language	English ⓘ
legalBasis	Title 10 of the United States Code (policy functions of the Secretary of Defense) ⓘ linked to: Title 10 of the United States Code
locatedIn	The Pentagon ⓘ linked to: Pentagon
oversees	defense support to civil authorities activities ⓘ homeland defense activities of the Department of Defense ⓘ security cooperation programs in the Western Hemisphere ⓘ
partOf	Office of the Secretary of Defense ⓘ
policyArea	border security support ⓘ counter-narcotics cooperation in the Western Hemisphere ⓘ counterterrorism within the U.S. homeland ⓘ defense cyber support to civil authorities (when applicable) ⓘ maritime security in the Western Hemisphere ⓘ
reportsTo	Under Secretary of Defense for Policy ⓘ
responsibleFor	Arctic security policy coordination ⓘ continuity of operations policy within the Department of Defense ⓘ defense support of civil authorities policy ⓘ homeland defense policy ⓘ mission assurance policy ⓘ security cooperation in the Western Hemisphere ⓘ
seat	Arlington, Virginia ⓘ
sector	defense policy ⓘ national security ⓘ
subordinateTo	Office of the Under Secretary of Defense for Policy ⓘ
worksWith	North American Aerospace Defense Command ⓘ United States Northern Command ⓘ linked to: U.S. Northern Command United States Southern Command ⓘ linked to: U.S. Southern Command

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Office of the Under Secretary of Defense for Policy → oversees → Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs ⓘ

Office of the Assistant Secretaries of Defense → hasPosition → Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs ⓘ

Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs → advises → Under Secretary of Defense for Policy on homeland defense and hemispheric affairs ⓘ

linked to: Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs

Office of the Under Secretary of Defense for Policy → hasSubOrganization → Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs ⓘ

subject linked to: OUSD(P)

All labels observed (2)

How this entity was disambiguated Show

Statements (47)

How these facts were elicited Show

Referenced by (4)

How this entity was disambiguated

How these facts were elicited