On September 11, 1973, Chilean President Salvador Allende died as military forces bombed the presidential palace and seized power, installing General Augusto Pinochet. Declassified CIA, State Department, and Nixon White House records confirm that the United States actively sought to destabilise Allende's government through covert operations (Track I and Track II), economic pressure, and military contacts. The CIA's own documents describe authorisation from President Nixon and National Security Adviser Henry Kissinger. The verdict is confirmed: US covert involvement is a documented historical fact, not speculation.