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https://en.wikipedia.org/wiki/National_Security_Advisor_(United_States)
The Assistant to the President for National Security Affairs, commonly referred to as the National Security Advisor or at times informally termed the NSC advisor, is a senior aide in the Executive Office of the President, based at the West Wing of the White House, who serves as the chief in-house advisor to the President of the United States on national security issues.
The APNSA also participates in the meetings of the National Security Council and usually chairs the Principal Committee meetings with the Secretary of State and Secretary of Defense (i.e. the meetings not attended by the President). The APNSA is supported by the National Security Staff (NSS) that produces research and briefings for the APNSA to review and present, either to the National Security Council or directly to the President.
The current Assistant to the President for National Security Affairs is Susan Rice, who assumed the role on July 1, 2013.
List of National Security Advisors
https://en.wikipedia.org/wiki/National_Security_Advisor_(United_Sta...