secede

He switched sides on several occasions during the battle to secede from Sudan, as he sought to strengthen his position and that of his Nuer ethnic group.

The grievances run so deep that in recent years many residents have embraced a decades-old idea of seceding from California and forming a “State of Jefferson.”

The short answer is that the issue of whether a state can secede was settled, permanently, in 1865.

South Sudan, the world's newest nation, gained independence in 2011 after seceding from Sudan.

South Sudan is the world's newest nation, after seceding from Sudan in 2011.