U.S. President Barack Obama speaks during a dinner with central European leaders during his visit to Warsaw May 27, 2011. At right is Polish President Bronislaw Komorowski. Obama will reaffirm a U.S. commitment to Poland’s security with a deal to set up an air detachment, the White House said on Friday, meeting a key Polish request for “American boots on the ground”. REUTERS/Kevin Lamarque (POLAND – Tags: POLITICS)