As commander-in-chief, the president's primary responsibilities include overseeing the United States Armed Forces and ensuring national security. This role involves making critical decisions related to military strategy, including deploying troops and responding to threats. The president also works closely with military leaders to develop defense policies and allocate resources effectively. Additionally, this role requires maintaining effective communication with Congress regarding military actions and budgetary needs. Overall, the president’s authority in this capacity profoundly impacts national and international security dynamics, shaping the country's defense posture and diplomatic relations.