The Arab Spring has tested the longtime bond between the U.S. and Saudi Arabia. The country’s wealth and oil supplies have made it a pillar in the Arab world for decades. But its role has changed as pro-democracy demonstrations have swept the region. U.S. support for the Arab uprisings has put the two countries at cross purposes. And the alliance between the two nations complicates U.S. dealings with other countries in the region– from Egypt to Bahrain to Yemen. A look at the U.S. and Saudi Arabia and how its relationship influences the region.