Manama: His Royal Highness Prince Khalifa bin Salman Al Khalifa the Prime Minister arrived in Doha today on an official visit to Qatar at the invitation of the Amir HH Shaikh Hamad bin Khalifa Al Thani to discuss the progressive bilateral ties and means of bolstering them in various fields.HRH the Prime Minister was received upon arrival at the Hamad International Airport by Shaikh Abdullah bin Nasser Al Thani Qatar's Prime Minister and Interior Minister and a number of senior officials .