[This epilogue to Scahill's bestselling book, Dirty Wars: The World Is a Battlefield , is posted with the kind permission of its publisher, Nation Books.] On January 21, 2013, Barack Obama was inaugurated for his second term as president of the United States. Just as he had promised when he began his first campaign for president six years earlier, he pledged again to turn the page on history and take US foreign policy in a different direction. "A decade of war is now ending", Obama declared. "We, the people, still believe that enduring security and lasting peace do not require perpetual war." Much of the media focus that day was on the new hairstyle of First Lady Michelle Obama, who appeared on the dais sporting freshly trimmed bangs, and on the celebrities in attendance, including hip-hop mogul Jay-Z and his wife, Beyonce, who performed the national anthem. But the day Obama was sworn in, a US drone strike hit Yemen. It was the third such attack...