The UAE lies between 22°30' and 26°10' north latitude and between 51° and 56°25′ east longitude. It shares a border with Saudi Arabia on the west, south, and southeast, and a border with Oman on the southeast and northeast. The land border with Qatar in the Khawr al Udayd area is about in the northwest; however, it is a source of ongoing dispute. Following Britain's military departure from the UAE in 1971, and its establishment as a new state, the UAE laid claim to islands resulting in disputes with Iran that remain unresolved. The UAE also disputes claim on other islands against the neighboring state of Qatar. The largest emirate, Abu Dhabi, accounts for 87% of the UAE's total area (). The smallest emirate, Ajman, encompasses only (see figure).