Columbia subject headings:
National security--Sudan.
South Sudan--Politics and government--21st century.
Sudan--Politics and government--21st century.
Harvard subject headings:
Political stability--South Sudan.
Political stability--Sudan.
South Sudan--Foreign relations--Sudan.
South Sudan--Politics and government--21st century.
Sudan--Foreign relations--South Sudan.
Sudan--History--Civil War, 1983-2005
Sudan--History--Darfur Conflict, 2003-
Sudan--Politics and government--1985-
Princeton subject headings:
Political stability--South Sudan.
Political stability--Sudan.
South Sudan--Foreign relations--Sudan.
South Sudan--Politics and government--21st century.
Sudan--Foreign relations--South Sudan.
Sudan--History--Civil War, 1983-2005.
Sudan--History--Darfur Conflict, 2003-
Sudan--Politics and government--1985-