Sudanese Vice President Adam Youssuf received a message from Qatari Heir Apparent Sheikh Tamim bin Hamad Al Thani, inviting the Vice President to participate in 12th Doha Forum to be held on May 20, 2012. The message was handed over by Qatari Ambassador to Sudan Rashid bin Abdulrahman Al-Nuaimi during a meeting today with the Sudanese Vice President.