Acting, therefore, in the defense of our own security and of the entire Western Hemisphere I have directed that the following initial steps be taken immediately
First: To halt this offensive build-up, a strict quarantine on all offensive military equipment under shipment to Cuba is being initiated. All ships of any kind bound for Cuba from whatever nation or port will, if found to contain cargoes of offensive weapons, be turned back Feedba -President John F. Kennedy's speech announcing the quarantine against Cuba, 1962
Which presidential role was fulfilled in the action described in this excerpt?
А. commander in chief
В. chief legislator
С chief of state
D chief diplomat