Sheikh Mohammed al-Issa speaks of Muslim obligation to bring hearts together; Israeli commentator says Saudis' choice of 'Zionist imam' is 'significant signal'

Efforts include prohibiting disparagement of Jews and Christians in mosques

Mohammed al-Issa, who visited Auschwitz in January, receives award from Jewish groups for his efforts to combat Jew-hatred; vows to 'keep on until there is no more' bigotry

After first visit to kingdom, heads of US Jewish umbrella group says it's the beginning of a 'long and productive relationship'

Conference of Presidents members meet with senior Saudi officials, sheikh who visited Auschwitz; talks focus on counter-terror, regional stability

Abdullah bin Zayed Al Nahyan calls for remembering 'the lives taken so that such crimes against humanity will not repeat themselves'

'To be here... is both a sacred duty and a profound honor,' Saudi head of Muslim World League says during tour of Nazi death camp with the American Jewish Committee

Saudi prince ally Mohammed al-Issa, other Muslim religious leaders and AJC officials are also slated to tour a Jewish museum and a mosque in Warsaw, share a Shabbat meal this week

Secretary general of the Muslim World League will join American Jewish Committee head at 75th anniversary of Auschwitz liberation