1. In the Muslim community supreme power/sovereignty does not rest in its citizens. Sovereignty for the Muslims lie in Allah SWT. Man is only His agent and is required to conduct himself and his activities as laid down in the Sovereign's Constitution called The Holy Qu'oran.
We are talking about the state of Iran's republic and not some idealized notion of divine rule. It is very pointless to engage in any discussion if you are going to mix the issues. The current system in place is a republic and should be referred to as such.
2. That is why the use of the WCC word rep-ub-lic is looking odd here. In the WCC the word republic takes them back into their heritage, history, the values they hold dear, the customs in their society, their culture, etc. Say the word "republic" and you straightaway is reminded of Plato, Aristotle, Socrates, etc. We don't necessarily aggree with or accept all of them.
The leader of Iran's revolution studied and drew inspiration from various sources, including Plato, Aristotle, Socrates, and did not solely study the Quran. Other ideologues of the Islamic Revolution were greatly influenced by the popular ideas of Marxism that had gained support in Iran. Frankly, I see nothing wrong with learning from others. In the past Iran was a leading power and the west learned from us, now, however, we are learning from the great minds of others. Mind you, much of what you criticize as western culture has its roots in the east. Borders are man made and meaningless, being a religious man you ought to have a wider perspective than defining your world in such shallow terminology.
3. I think brother Bolbol has given us a direction here. The word Jamhuria is our. It denotes our links to our history, culture, ideals and values.
Yes, use it if you speak Arabic or Persian. No need to make up new languages by adding and mixing words when there are perfectly adequate words in place already.
BTW, why do you number your posts?