3. SUDAN
FSI score: 109.4 
The year 2011 saw the fragile state of Sudan literally break in two when South Sudan formally declared independence in July. The split between the two longtime rivals has not been a peaceful one, with numerous skirmishes over oil-producing regions along the border, a worsening internal refugee crisis as South Sudanese find themselves stranded in the north, and each side accusing the other of supporting internal rebel movements. Tensions came to a head in April of this year when the Khartoum regime launched airstrikes and sent ground troops over the border, and northern President Omar al-Bashir vowed to wipe out South Sudanese leaders, referring to them as "insects." Analysts are now warning that a wider war looms.
Here, the shell of a vehicle that was hit by a bomb sits in front of the abandoned village of Trogi during fighting in the South Kordofan region along the border.
ADRIANE OHANESIAN/AFP/GettyImages
