Why the US supports the autocratic dictatorship of Saudi Arabia.

It's simple: Saudi Arabia is the second-largest foreign oil provider to the United States. Saudi Arabia is also the biggest client of US wepons sales, spending over half a trillion dollars over the years on US weapons. That's why the US never criticizes the SA violation of Human rights, support of radical terrorists and the bombing of civilians in neighboring countries, like Yemen. Source: http://fas.org/asmp/profiles/saudi_arabia.htm