Erdogan, who portrays himself as the global Muslim leader who speaks up for Palestinian rights, has intensified his rhetoric against Israel over its actions in Gaza, ahead of an August 10 presidential election in Turkey.
"(Israelis) have no conscience, no honour, no pride. They curse Hitler day and night, but they have surpassed Hitler in barbarism," Erdogan told supporters at a campaign rally in the Black Sea city of Ordu, yesterday.
Erdogan has spoken strongly against Israel since it launched its offensive against militants loyal to the Islamist group Hamas in Gaza that has killed more than 300 Palestinians.
He has accused the Jewish state of carrying out a "genocide" of Palestinians and has ruled out any improvement in troubled ties that soured after Israel's 2010 raid on a Gaza-bound aid ship which killed ten Turks.