Jordan is a key ally of the US and UK and, together with Egypt and the United Arab Emirates, is one of only three Arab nations to have signed peace treaties with Israel, Jordan's direct neighbour. Jordan views an independent Palestinian state with the 1967 borders, as part of the two-state solution and of supreme national interest. The ruling Hashemite dynasty has had custodianship over holy sites in Jerusalem since 1924, a position re-inforced in the Israel–Jordan peace treaty. Turmoil in Jerusalem's Al-Aqsa mosque between Israelis and Palestinians created tensions between Jordan and Israel concerning the former's role in protecting the Muslim and Christian sites in Jerusalem.