Dr Mustafa Othman Isma'il, the Advisor of the Sudanese President, arrived here today on a two-day visit to Egypt. Isma'il will deliver a message from Sudanese President Omar Al-Basheer to Egyptian President Hosni Mubarak. The message contains an invitation to President Mubarak to participate in the African summit due to be held in Khartoum on January 23, 2006.