USA: USA is an ally of Saudi Arabia despite the fact that the terrorists of 9/11 came from S.A. Since the gulf war, when S.A decided to support U.S instead of Iraq, they have trade relations. S.A. earned a lot of money they made off of U.S. oil sales. They have good relation , and every time barrier appeared (like the Arab-Israel conflict, World War II, the Cold War Gulf War I and II, and the War on Terror) they overcome and recover together.
Jordan: Relations with Jordan became strained in the years following the Persian Gulf War. Relations were mended in 1996 when Prince Abdullah visited the country. The countries have since met and discussed international development and the Arab situation.
Yemen: The two countries generally enjoy good relations and closely cooperate in military, economic and cultural issues. Saudi Arabia has two main goals in Yemen:
S.A seek to prevent any unity of all the tribes in Yemen. A united strong Yemen could end the Saudi dominance over the Arabian peninsula
Saudi Arabia works to prevent powers from establishing bases of influence in Yemen. S.A would prefer all states in the Arabian peninsula share its monarchical form of government.
Egypt: Egypt and Saudi Arabia enjoy very distinguished status and huge potential on the Arab, Muslim and international levels. The two countries adopt similar stands concerning many issues and crises on the international, Arab and Muslim fronts, including as the Arab-Israeli conflict and Palestinian cause. This similarity reflects common principles and strong relations between the two countries.
Others allies of S.A are: Somalia, U.K, Albania, Pakistan, Afghanistan and Kazakhstan.
Iran: the relations between Iran and S.A are really tense following a number of reasons. Both Saudi Arabia and Iran have aspiration for Islamic leadership and both the countries possess different vision of regional order. Iran position is that there is no room for monarchical regimes in the Islam. Iran and Saudi Arabia are competing for the control in the oil market. Since the Islamic Revolution in Iran, Iran sees S.A as an agent of the US in the Persian Gulf region that speaks for the US interests. On the other hand, S.A is anxious that Iran will conquer territories in the Persian Gulf region, and afraid from the power Iran will have if Iran will build nuclear arsenal.
Israel: Saudi Arabia has supported Palestinian rights to sovereignty, and called for withdrawal from the Occupied Territories since 1967, but S.A is more moderate than other countries in the Arab League. S.A suggested a multilateral peace proposal based on withdrawal in 2002, in 2007 it supported in publish in found resolution to the conflict. S.A is participating in economic boycott of Israel and doesn’t have diplomatic relations with it.