President Barack Obama greets U2 front man Bono, center, and Muhtar Kent, chairman of the Board and chief executive officer of The Coca-Cola Company, right, after speaking during a World AIDS Day event at George Washington University in Washington, Thursday, Dec. 1, 2011. (AP Photo/Carolyn Kaster)

Photo by: Carolyn Kaster

President Barack Obama greets U2 front man Bono, center, and Muhtar Kent, chairman of the Board and chief executive officer of The Coca-Cola Company, right, after speaking during a World AIDS Day event at George Washington University in Washington, Thursday, Dec. 1, 2011. (AP Photo/Carolyn Kaster)