The Arabian Peninsula is a peninsula in the Middle East, bounded to the north by Jordan and Iraq, to the east by the Persian Gulf and the Gulf of Oman, to the south by the Arabian Sea, and to the west by the Red Sea and Gulf of Aqaba. The Peninsula comprises the nations of Kuwait, Saudi Arabia, Qatar, the United Arab Emirates, Oman and Yemen. In addition, the island nation of Bahrain is connected to the peninsula by a causeway. Most of the land area of the peninsula is desert or semi-desert, and it is mountaious in the west and south. It has significant hydrocarbon reources.