Friday was Hillary Clinton's final day at the State Department. As her staff bid farewell, many analysts are wondering what kind of lasting impact she's had on U.S. foreign policy. In an interview, Clinton says it was important for the U.S. to "again assume a leadership position that was in concert with our values." She says she helped repair frayed alliances and brought some longer term issues to the forefront including the role of women, climate change and Internet freedoms. "There is nothing fast or easy about diplomacy," she says.