The two countries the Kingdom of Saudi Arabia and the United States of America began many decades ago but it became stronger in 1933 when full diplomatic relations were established. USA being the 2nd largest democratic and KSA a conservative Islamic absolute monarchy, but the two countries have been allies. Saudi Arabia considers the United States to be one of its closest allies and diplomatic partners. In recent years, the two countries have occasionally been described as having a Special Relationship with one another. U.S. Former presidents, George W. Bush has a strong and close relations with senior members of the Saudi Royal Family. Which the current president, Barack Obama follows.
The alliance begun strongly from World War II, in order to oppose the communism, which eventually grown in support of stable oil prices, stability in the oil fields and oil shipping of the Persian Gulf, and stability in the economies of Western countries where Saudi’s have invested. In particular the two countries were allies against the Soviets in the Afghanistan and in the expulsion of Iraq from Kuwait in 1991. The two countries have been in opposition over the state of Israel, the embargo of US and its allies by Saudi Arabia and other Middle East oil exporters during the 1973 oil crisis which raised oil prices considerably, the 2003 invasion of Iraq by the US which Saudi Arabia opposed, aspects of the “War on Terror”, and what many in the US see as pernicious influence of Saudi Arabia after the September 11 attacks.