What are the differences between sheikh, emir, sultan and caliph?

sultan kingThe king is the umbrella to the people and the people are the pillars of the king, Sultan Abdul Halim said in comments issued through the national news agency, Bernama. The king'sKUALA LUMPUR, Malaysia (AP) — Malaysia’s billionaire king Sultan Ibrahim Iskandar was installed on Saturday, six months after he was sworn in for a five-year term under a unique