600? this guy is trying to replicate Sparta

One of the main reasons all of the west is reluctant to send in troups/get involved is because they are broke. Flying troops over and deploying helicopters, jet fighters...etc costs many millions before you even start to fight. This is a legacy from the other wars which exhausted everyone involved financially and mentally. Most countries are battling a budget deficit e.g. France is imposing a mind boggling 75% tax on the wealthy...as it's broke, a country like this can't afford to fight unless it's for ultimate survival i.e. a direct invasion.
The rest of the Arab leaders are disconnected from the real world, many leaders are born and live in ultimate opulence, they'll only act if something is on the door step of their castle. Arabs don't care if other Arabs/Muslims burn slowly before their eyes as long that the grass is watered in his palace and his hundreds of millions are safe in Swiss accounts.