They have a really strong relationship.Sudan and Turkey have enjoyed a relatively close relationship, owning by previous historical links between two countries since the Ottoman Empire.

Due to this historical tie, Sudan and Turkey share an Ottoman legacy, though little comparing to other Arab states.

The Ottomans, represented by Egypt of Muhammad Ali, conquered Sudan in early 19th century, which marked the era as Turkiyah (Turkish rule).

[4] With the outbreak of World War I, Britain separated Egypt and Sudan together from the Ottomans, and the two countries would have no official relations until mid-20th century.

[7] One of the most notable is the lease of the Sudanese island Suakin to Turkey in a 99-year contract, to which regional rivals like Egypt and Saudi Arabia have reacted with skepticism and suspicion.