Abu Dhabi - The President, His Highness Shaikh Khalifa bin Zayed Al Nahyan, has sent a cable of condolence to the Custodian of the Two Holy Mosques, King Salman bin Abdulaziz Al Saud of the Kingdom of Saudi Arabia, on the death of Prince Abdullah bin Abdul Aziz bin Mosaed bin Jlwi Al Saud, Governor of the Northern Border Region.