Manama, Jan. 11 (BNA): His Royal Highness Prince Salman bin Hamad Al Khalifa, the Crown Prince and Prime Minister, met today with the private sector sponsors of the Celebrate Bahrain events at Riffa Palace.   HRH the Crown Prince and Prime Minister affirmed the pivotal role of public-private sector partnerships in supporting and advancing the Kingdom's comprehensive economic development, led by His Majesty King Hamad bin Isa Al Khalifa.   His Royal Highness emphasised that the...