it's debate number three. it's in boca raton, florida. it's happening tonight, at 9:00 p.m. eastern. before you watch the debate on cnn or at cnn.com/debates, ana jones gives us a preview. >> reporter: the third face-off will focus entirely on foreign policy. from afghanistan and pakistan, to israel, iran and the changing middle east. the candidates will spar over america's role in the world. the new face of terrorism, and how to deal with a rising china. mr. obama tried to highlight one of his biggest foreign policy accomplishments at a light charity dinner in new york. >> monday's debate is a little different because the topic is foreign policy. spoiler alert, we got bin laden. >> reporter: for his part,