For 100 days in 1994, Rwandans killed each other at a rate of 10,000 a day. Today the country tries to heal its wounds and deal with the consequences of the slaughter. "We have a nation to build," says Anglican Bishop John Rucyahana. "We cannot wait until we forget the genocide."

President Barack Obama is in Turkey, where he is reaching out to a majority Muslim country and talking about bridging the East-West divide.

Reading the foreign policy positions of the top Democratic and Republican presidential candidates in a series of articles published in Foreign Affairs earlier this year, one found many descriptions of the United States. But not one of them used the "E" word -- empire.