The DHS incorporates several dozen offices and agencies, many of them previously assigned to other departments and some entirely new. They include the U.S. Coast Guard (USCG), U.S. Secret Service (USSS), Federal Emergency Management Agency (FEMA), Immigration and Naturalization Service (INS), and the newly created Transportation Security Administration (TSA).
The correct answer is: On Kingship.
The original title was "De regno" and it was addressed to the King of Cyprus (who also held the tile of King of Jerusalem at the time).
In contrast, Nichomachean Ethics and Politics is attributed to Aristotle and Das Kapital was written by Karl Marx.