U.S. President Barack Obama, right, thanks NATO Secretary General Anders Fogh Rasmussen at the opening of the NATO summit in Chicago, May 20, 2012. U.S. President Barack Obama, right, thanks NATO Secretary General Anders Fogh Rasmussen at the opening of the NATO summit in Chicago, May 20, 2012. SHARE IMAGE: Download Image: Full Size (2.91 MB) Tags: Photo Essays Photo By: VIRIN: 945691-B-ZJS17-740.jpg Photo Gallery