Paratroopers from the 3rd Battalion Parachute Regiment, soldiers from the U.S.-led Task Force Paladin and an unidentified U.S citizen from Dallas, Texas, center, working as a civilian contractor to advise the U.S.-led Task Force Paladin, take part in an operation to search three compounds and look for weapons in Salavat, Panjawi Province, Afghanistan.
In World War II, contractors made up just 10 percent of the military workforce; by the Iraq war, that number had risen to 50 percent. And that number is climbing – not just in the U.S. but worldwide, as governments look to save money and keep casualty numbers down for their own militaries. But what does this trend toward private-run warfare mean for the future of international relations? One former contractor warns that armies-for-hire will soon be the norm, making it easier than ever to wage war. What an increased reliance on private armies could mean for modern warfare and global security.
Pulitzer Prize-winning biographer Jon Meacham on the evolution of Abraham Lincoln's moral principles and political leadership -- and what the era of Lincoln can teach us about the state of our democracy today.
What troubles at Twitter say about the state of social media -- and why one tech watcher argues this could transform the industry in positive ways.
Political analyst Norman Ornstein on control of Congress, the red wave that wasn't, and other lessons from the midterm elections.
At the end of the year Dr. Anthony Fauci will step down from his post as the nation's top infectious disease doctor. He talks to Diane about his 38 years on the job -- and what's next.
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