What is the meaning of "Choreha v'Ein Sham Meluchah"?
Rashi: Its officers stand 1 , and not one of them claims authority or kingship.
Radak: Choreha are deputies, like "Chorei Yehudah" (Yirmeyah 27:20), "Min ha'Chorim" (Shmuel I, 14:11). Initially, they said there is no kingship there - we are the kings! Now they and all its officers will be eradicated. The Vov in v'Ein is extra, like "va'Yisa Avraham Es Einav" (Bereishis 22:4).
Malbim: Choreha are those who come from the royal family. They choose a king from them - "Ashreich Eretz she'Malkech Ben Chorim" (Koheles 10:17). The 'nation' will be Ka'as and Kipod; they will not seek a king.
I.e. unlike a king, who sits. (PF)
What is "Afes"?
Rashi: It is eradication.
Malbim: One is called a Sar only if he has authority. Since there is no nation, there are no Sarim. (However, people of the royal family are called Choreha, even if they have no authority.)