Each side in the bloody Nagorno-Karabakh conflict accuses the other of war crimes. Such allegations attract foreign attention and possibly intervention, but rarely lead to a peaceful solution.
There is a growing movement in Sabah and Sarawak for increased sovereignty or outright secession. Many feel the promises of federation haven't been delivered.
Despite his defense of slavery, the former vice president and US senator from South Carolina has been honored with statues and streets, schools and counties. That's finally changing.
The African Union's intervention track record in conflict situations is mixed.
Does South Africa have skeletons in the closet over the death of the UN Secretary-General?
Calls for secession in Ethiopia could destabilise the entire nation.
The already extremely fragile political condition cannot handle any further instability and chaos.
Some human rights activists worry that Cameroon could be the site of Africa's next civil war.
The former president of Catalonia is in a German prison, awaiting possible extradition to Spain where he faces charges of rebellion.
After the most recent elections, Catalonia's secessionist coalition is free to form a government. But their president is still exiled in Belgium.
The situation in Catalonia is ripe for widespread civil disobedience against the Spanish government.
Just because the constitution says secession is illegal, it doesn't mean it is under international law.
The Spanish government is dealing with the Catalonian secession movement in entirely the wrong way. But what would getting it right look like?
Despite the passionate for which they are usually fought, independence movements are rarely successful and their outcomes less than hoped for.
The referendum that wasn't a referendum can't have a winner.
Protests are raising tensions in Africa's most populous country, with agitators and federal troops clashing on the streets. But is Nigeria on the brink of another civil war?
Separation is intended to deal with problems and provide an acceptable alternative, but history shows it may not be the solution.
By many estimates, the senator from Vermont has lost the Democratic nomination for president of the U.S. But a King's College scholar explains how he can win.
Catalonia's pro-independence parties now have the chance to assemble a parliamentary majority, but they'll have to overcome their own differences first.
South Sudan's independence in 2011, which ended half a century of deadly conflict, was met with much praise. But a descent into civil war has led to dismay and suggests fresh thinking is required.