slightly larger than South Carolina; slightly smaller than Maine
UAE-Oman: boundary agreement was signed and ratified with Oman in 2003 for entire border, including Oman's Musandam Peninsula and Al Madhah enclaves, but contents of the agreement and detailed maps showing the alignment have not been published
UAE-Iran: Iran and UAE dispute Tunb Islands and Abu Musa Island near the Strait of Hormuz, which Iran has occupied since 1971
UAE-Saudi Arabia: the UAE has differences with Saudi Arabia over their border and the sharing of a major oilfield there, although the issue is seldom mentioned publically