Seated L-R, Austrian President Heinz Fischer, Albanian President Bamir Topi, US President Barack Obama, Polish President Bronislaw Komorowski, Ukrainan President Viktor Yanukovych, Slovenian President Danilo Turk, Slovakian President Ivan Gasparovic take part in a dinner for central European leaders at the presidential palace in Warsaw on May 27, 2011. The US president landed in Poland today on the final leg of his European tour, to meet leaders from ex-communist states whose own reforms could hold lessons for the Arab Spring. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)