This is the public misunderstanding of how US policy works. The US has no interest in promoting democracy at all, and actively supports dictatorships against democracies ... i.e. without active US involvement democracies would come into existence. In fact, no country has toppled more democracies than the US has (Iran and Chile are just the most famous) in pursuit of actual strategic goals (keeping oil prices low, fighting the Soviets, etc).
http://en.wikipedia.org/wiki/Covert...ime_change_actions#Communist_states_1945-1989
Its support of democracy is public rhetoric, used when convenient. It supports women's rights when convenient (recently in Afghanistan), and supports their suppression when that is convenient (the psycho Islamists the US imposed on Afghanistan in the 80s, Saudis now, etc). Saudi Arabia for instance is not a dictatorship the US simply tolerates for getting along in the world ... the US is actually behind the Saudi dictatorship (which otherwise would disappear) which is the keystone to the US's domination of the Middle East and its oil.