Poland's president signs controversial Holocaust bill into law
Auschwitz survivors visit the former Nazi concentration camp -- where 1.1 million people perished between 1940 and 1945 -- during the 70th anniversary of the camp's liberation by Soviet forces, on January 27, 2015 (AFP Photo/Janek Skarzynski)

Poland's President Andrzej Duda on Tuesday signed into law a controversial Holocaust bill intended to safeguard his country's image abroad but which has instead sparked tensions with Israel, the US and Ukraine.