Well, Kosovo, Haiti and Somalia are UN missions, which lefties like you love. Haiti and Somalia, of course, have already been abandoned by the UN, who believe as you do. The US is trying to bring democracy to Afghanistan, but it will take a while, as there has been no organized government in that country for decades. That doesn't mean they are too stupid or inferior to democratize. Only liberals are that arrogant.
BTW, I guess you think the Japanese and Germans, two peoples with no history of democracy, were also too "inferior" to embrace democracy?