Ferguson maintains that the United States is unquestionably an imperial power, but because Americans don’t like to think so, the US often fails to fulfill its imperial responsibilities. One crucial case in point for Ferguson is Iraq, where, in his view, an imperial power less in denial about itself would have known that such an invasion required forethought, vast resources, and the willingness to stick around for a very long time.
The theme of empire is central to the new book, as well. Ferguson believes the real problem with an empire shows up when it declines, at which time genocidal hatred is liable to break out among the ethnic groups it had governed. That’s what happened, he argues, in the extraordinarily-often interethnically-violent 20th century, and what he worries may be underway in the Middle-East.

