Polish President Andrzej Duda is urging his nation’s government to guarantee that Israeli Prime Minister Benjamin Netanyahu will not be arrested if he attends a ceremony at Auschwitz. The Israeli prime minister is facing an arrest warrant from the International Criminal Court on charges of war crimes in Gaza — a warrant that member nations, including Poland, are ostensibly required to act upon if presented with the opportunity. Arrest would likely keep Netanyahu from attending an event commemorating 80 years since the liberation of Nazi Germany’s death camp in Auschwitz, one of the bloodiest sites of the Holocaust. Israeli Prime...