>> well, it's probably a decade ago, henry kissinger, my old professor at harvard, and lee kwan yu, about which i was writing a book which i published -- >> both have done interviews with you. >> and wonderful interviews. these i think are two the strategic leading lights of our lifetime. and each of them kept reminding me-- graham, you're interested in the soviet union, yes, you're interested in the nuclear weapons. china, think about china. i started studying china about 10 years ago. and about five years ago, i stumbled on this idea that the thucydide had a big idea, which was when a rising power threatens to replace a ruling power, in general, bad things happens. that aa lens, as henry says, helps you look through the daily noise and news, to see the-- a primary dynamic here, and that helps us recognize the dangers that are inherent in such a situation. >> rose: i mean,s it as timely as today. this is the "financial times" from today, and it has a picture of xi jinping. "xi jinping, china's president, makes his way to the podium in the great hall of the people to deliver an hour-long