From the Document, "Sudan's President Omar al Bashir, who took power in a 1989 coup, arguably faces the greatest challenge to his rule in three decades, as public pressure for a political transition mounts. Bashir's government has been the target of near-daily protests across the country since December 19. [...] Spurred by frustrations with deteriorating economic conditions, corruption, poor governance, and repression, the protests have been further fueled by the government's response, in which more than 2,600 people reportedly have been detained and over 50 killed. The crackdown threatens efforts to improve U.S.-Sudan relations and raises broader questions for U.S. policy. Bashir's recent declaration of martial law may increase prospects for instability, with implications for U.S. interests in the region."
CRS Insight, IN11058
Congressional Research Service: https://crsreports.congress.gov/