Things I'd like to know about Yemen

And the newsies probably don't know.  Like where is the Yemeni Army?  Surely they have one.  How big is it?  What side is it on? 
  Who are the rebels?  Are they locals? Are they Iranians?  Are they foreign fighters from all over the place like the old Mujahedin in Afghanistan?  How long have they been in business?  How many of them are there?  Who is their leader?  What is their relationship with the Saudis?  How much turf do they control?  Where do they get their gasoline? 
   Who was the Yemeni government just decapitated?  A collection of tribal sheiks?  A democracy with elections?  A Saudi puppet?  A hereditary monarchy?
   What do the Saudi's think about the new government in Yemen?  Are they for it or against it? 
   Does Yemen have any oil to pay for things?  If not, what do they use for foreign exchange?