General Flynn's All-Out War on Terror

Formerly Obama's Defense Intelligence Agency director, now an adviser to Trump -- and he happens to have a grand unifying theory in his new book.

Michael Flynn, the Obama administration alumnus who is advising Trump.

Photographer: Alex Wong/Getty Images

A theme of President Barack Obama's counterterrorism policy has been a relentless narrowing of focus. Under his watch the U.S. has not been at war with terror or radical Islam. It has been in discrete conflicts with al Qaeda's core leadership and its affiliate in Yemen and the Islamic State. And while Obama's war has waxed and waned, he has never explained its disparate parts as a whole the way his predecessor did.

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