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The president of majority Muslim Turkey said on Tuesday "it is the common duty of all Muslims to embrace the Palestinian cause and protect Jerusalem" and that safeguarding the Al-Aqsa Mosque should not be left to children armed with nothing but stones.
Located in the Old City of Jerusalem, the hilltop compound is sacred to Muslims and Jews.
Speaking at a parliamentary symposium on Jerusalem in Istanbul, the Turkish leader also criticised an Israeli proposal to make mosques reduce the volume of loudspeakers issuing the call to prayer.
His comments come as Israel and Turkey prepare to exchange ambassadors as part of a reconciliation deal.