You are a historic figure, Mr. President. You are not only the first African-American president; you are the first who has made use of your power to target and kill individuals identified as a threat to the United States throughout your entire term. You are the first president to make the killing of targeted individuals the focus of our military operations, of our intelligence, of our national security strategy, and some argue, of our foreign policy.

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Tom Junod, author of "The Lethal Presidency of Barack Obama" in Esquire, discusses extrajudicial assassination and the not-so-secret but secret-in-court drone wars.

Read more on drones.