What is the signficance of the Prince of Persia delaying the Archangel Michael coming to Daniels aid? A writer on Rumor mill news .com recently posted the idea that the Prince of Persia is a substitute (Satanic) god that some Christians worship as God and become deluded in the process.  I cannot at this stage see any way to support this reasoning so I ask:  who exactly does the Prince of Persia represent in a spiritual sense today?  Is it a reference to a historical individual powerful enough to prevent the ongoing work of an archangel in history only, or is there a contemporary meaning also?
I have quoted this answer partly from St. Thomas Aquinas' Summa Theology (1, 113, 8) and the Ignatius Catholic Study Bible. For me" this makes sense.

I hope it may be of help:


  "Prince: An angel who has spiritual oversight and influence over an
  earthly nation. Reference is made in Daniel to the angelic patrons of
  Persia (10:13), Greece (10:20), and Israel (12:1). Jewish tradition
  traces this idea to the Greek LXX translation of Deut 32:8, which
  states that nations are divided "according to the number of the angels
  of God" (Deut 32:8 LXX). Christian tradition also teaches that God
  exercises his providential government over nations through the
  ministry of angels. They serve as helpers and protectors who are
  tasked with preserving some knowledge of God and his truth among those
  who are ignorant of supernatural revelation (e.g. St. Clement of
  Alexandria, Stromata 7, 2; St Basil, Against Eunomius 3, 1)."
  
  "On the contrary, It is written (Daniel 10:13): "The prince of the
  kingdom of the Persians resisted me one and twenty days." But this
  prince of the Persians was the angel deputed to the guardianship of
  the kingdom of the Persians. Therefore one good angel resists the
  others; and thus there is strife among them.
  
  I answer that, The raising of this question is occasioned by this
  passage of Daniel. Jerome explains it by saying that the prince of the
  kingdom of the Persians is the angel who opposed the setting free of
  the people of Israel, for whom Daniel was praying, his prayers being
  offered to God by Gabriel. And this resistance of his may have been
  caused by some prince of the demons having led the Jewish captives in
  Persia into sin; which sin was an impediment to the efficacy of the
  prayer which Daniel put up for that same people.
  
  But according to Gregory (Moral. xvii), the prince of the kingdom of
  Persia was a good angel appointed to the guardianship of that kingdom.
  To see therefore how one angel can be said to resist another, we must
  note that the Divine judgments in regard to various kingdoms and
  various men are executed by the angels. Now in their actions, the
  angels are ruled by the Divine decree. But it happens at times in
  various kingdoms or various men there are contrary merits or demerits,
  so that one of them is subject to or placed over another. As to what
  is the ordering of Divine wisdom on such matters, the angels cannot
  know it unless God reveal it to them: and so they need to consult
  Divine wisdom thereupon. Wherefore forasmuch as they consult the
  Divine will concerning various contrary and opposing merits, they are
  said to resist one another: not that their wills are in opposition,
  since they are all of one mind as to the fulfillment of the Divine
  decree; but that the things about which they seek knowledge are in
  opposition."


Kind regards, have a nice day!