DUBAI: Saudi Prince Mansour bin Khalid Al-Saud has submitted a copy of his credentials to Qatar’s Deputy Prime Minister and Minister of Foreign Affairs Sheikh Mohammed bin Abdulrahman Al-Thani to become the Saudi ambassador to Doha.  He is the first to be reinstated by Arab states that had agreed to end a row with Qatar earlier this year.  Al-Thani wished the new Saudi ambassador success in his duties, assuring him of all support to advance bilateral relations between the two countries to achieve closer cooperation in various fields, according to state-run Qatar News Agency.  Saudi Arabia, the United Arab Emirates, Egypt and Bahrain had agreed in January to end the boycott imposed in mid-2017 and restore political, trade and travel ties with Doha. Riyadh has taken the lead among the four in re-establishing relations.