Saudi Arabia i think........but what period of history?
a good idea would be to find a map of that region online and see which would is/was the monarchy of the time period your studying. Because Egypt, Jordan and from what I remember of today (2008, modern time) Saudi Arabia is a monarchy.
"Saudi Arabia, monarchy in southwestern Asia, occupying most of the Arabian Peninsula. Saudi Arabia is bounded on the north by Jordan, Iraq, and Kuwait; on the east by the Persian Gulf and Qatar; on the southeast by the United Arab Emirates and Oman; on the south by the Republic of Yemen; and on the west by the Red Sea and the Gulf of Aqaba. The country’s border with the United Arab Emirates is not precisely defined. Saudi Arabia has an area of about 2,240,000 sq km (about 864,900 sq mi). The capital and largest city is Riyadh" from
http://www.countriesquest.com/middle_east/saudi_arabia.htm
good luck.
