A Jewish man visits the Holocaust museum in Jerusalem, January 24, 2005. World leaders including presidents Vladimir Putin (news - web sites) of Russia, Jacques Chirac of France, Horst Koehler of Germany and Moshe Katsav of Israel will mark the 60th anniversary of the liberation of the Auschwitz-Birkenau concentration camp, the biggest Holocaust site, on Thursday at the camp memorial in Oswiecim, Poland. REUTERS/Goran Tomasevic