The National Security Advisor (NSA) is a senior official in the U.S. government responsible for advising the President on national security and foreign policy matters. The NSA coordinates efforts among various government agencies, ensuring that the President has the best information and strategies to address security challenges. The position of National Security Advisor was established in 1953 and has since become crucial in shaping U.S. defense policies and international relations. The NSA often leads the National Security Council, which includes key officials from different departments, to discuss and formulate responses to global threats and crises.