lyndon johnson was not forthcoming about the gulf of tonkin incident, and james polk was not forthcoming. he maneuvered the country into war without telling america that his undlying aim was territorial expansion. when that became clear, it sapped his political standing significantly. >> was the unpopular when he left office? >> he was a president with a great deal of iron will and a great deal of determination to get what he wanted. he was willing to expend a great deal of political capital. as a result, i think he sacked his political stamina. >> in perusing your book, because it is a substantial volume -- in preparing for today, i was struck by the fact that he was not confrontational. he was not mendon johnson -- lyndon johnson. he endured buchanan, his secretary of state is terrible antics, and yet you say he was an iron will demand. these are not tolerances of iron-willed men, are they? >> he was a paradoxical. when it came to face-to-face confrontation, he was -- there is no better word for it -- a coward. he could not handle face-to-face confrontation. he was willing to outmaneuv