09/28/2010 11:36 am ET Updated Dec 06, 2017

Bob Woodward With George Stephanopoulos: What Are The 'Lessons Of Vietnam, World War II' For Obama? (VIDEO)

"There's so much to talk about, but let's begin with the news of the morning," George Stephanopoulos said this morning to Bob Woodward, author of "Obama's Wars," on "Good Morning America."

"Stepped up drone attacks -- 20 this month against Pakistan," Stephanopoulos said. "But one of the things you point out in 'Obama's Wars' is that this has been a theme of the entire administration from the very beginning. This is something the president has been very aggressive about."

"He has," said Woodward. "But what's interesting is the former CIA director Michael Hayden warned Rahm Emanuel, the chief of staff, that you don't solve the Pakistan safe haven problem with drone attacks. Lessons of Vietnam, World War II: You can't change the conditions from the air, you have to get boots on the ground."

Last night on "World News," Diane Sawyer said: "Once again, Woodward has reached into the heart of decision making in the presidency. Specifically, a young president, just 14 years old at the end of Vietnam. Tested by the military as he makes his life or death decisions about the long war in Afghanistan."

President Obama's age is in stark contrast to that of the seasoned journalist who has been a revered writer since his work on Watergate in the '70s.

What else does the interview reveal about the shocking new book? What "lessons" can Obama learn from Vietnam and World War II?