Ibn Saud, leader of the House of Saud, defeats rivals, captures Mecca, and becomes King of Saudi Arabia.
Oil is discovered in the Kingdom's eastern province.
U.S. President Franklin D. Roosevelt and Ibn Saud meet in historic summit aboard a warship near Cairo.
OPEC founded in Baghdad. Saudi Arabia comes to dominate.
After Arab-Israeli war in October, Saudi Arabia leads Arab oil producers in an embargo that quintuples oil prices.
Saddam Hussein attacks Kuwait. U.S. assembles international coalition to fight Iraq. Saudi Arabia serves as staging ground.
Nineteen U.S. servicemen die in terrorist attack at Khobar in Saudi Arabia.
Plunging world oil prices push Saudi Arabia toward financial crisis.
Attacks on World Trade Center and Pentagon, in which as many as 15 Saudis were involved, strain U.S.-Saudi ties.