Which of these illustrates an expansion of the president's power as commander in chief?

Drones have secretly been used to kill a suspected terrorist in Yemen, this is the illustration of an expansion of the president's power as a commander in chief.
The power of Presidency as commander in chief of the Army-Navy of the United States it says that he shall take care that the laws are faithfully executed.

Japan  sided with the  entente powers  in wwi because it was a great opportunity to pick off germany's colonies in the pacific free of charge.