I would like to hold a question in a more wide context. So will pres.Obama change the World. I mean significant changes, not cosmetic ones.Mr Obama told hundreds of thousands at a rally on Sunday that "the dream of our founders will live on in our time".
Sunday's massive concert took place at the Lincoln Memorial - on the same steps that Martin Luther King made his "I Have A Dream" speech in 1963 to similar crowds.
Concluding the concert, Mr Obama spoke of his hope that the US would overcome its toughest challenges in generations, saying "anything is possible in America".