But every single time, a grass-roots uprising has put it right back on the table.
Sudan's government says they bombed towns in Darfur to put down a regional uprising by the African rebels.
Tunisia has seen numerous clashes between the authorities and hardline Islamists since the uprising in 2011.
BBC: Tunisia bars Ansar al-Sharia Salafist meeting in Kairouan
Few as they were, some immediate gains testified to the power of the mass uprising.
Yes, it was an Arab uprising, but it could not have succeeded without outside help.
Mr Deby's government blames Sudan for inspiring the uprising - an accusation Sudan denies.
Mali's internal quarrels were reignited after the uprising in Libya began in February 2011.
Tunisia has seen numerous clashes between the authorities and hardline Salafists since the uprising in 2011.
He said trucks then carried the men to the compound where the uprising began.
Gaddafi was killed in October 2011 after a Nato-backed uprising forced him from power.
Today's sober assessments stand in contrast with the expectations when the Andar uprising first started.
The violence in Darfur erupted in 2003 after rebels began an uprising against the Sudanese government.
In more recent history, the city was the centre of the Zapatista armed uprising in 1994.
His first book Uprising (with its own community on the rise) will be published soon.
Nine hundred Resistance fighters and 600 Parisian civilians died in the ten day uprising.
His death was the first political assassination in Tunisia since the Arab Spring uprising in 2011.
In the early months of the uprising Aleppo, Syria's commercial capital, was largely spared the violence.
His new book, Uprising exploring Movement Marketing has been published by McGraw Hill.
And allegations have emerged about the role of the Dominican Republic, Haiti's neighbour, in the uprising.
Dergham, an activist along the Syrian-Turkey border, said the activists help fuel the uprising.
The Zapatists' armed uprising in January 1994, though it led to some 150 deaths, was short-lived.
He films the uprising with a flat theatrical abstraction, turning it into a dimly recalled dream.
I'm Tunisian, but I was working and studying in the UK when the uprising first began.
Mrs Clinton may be right that outside support for the uprising would be counter-productive.
Most Saudis are Sunni Muslims, the same as the Syrian majority who kicked off the uprising.
The other stream is led by the young, armed fighters newly fortified by the uprising.
The powerful chiefs from Fiji's eastern islands, who were well-known backers of the uprising, remain immune.
It says more than 100 British Muslims are believed to have joined the uprising against President Assad.
In this Canadian uprising, 20 minutes from the US border, I see the possible future of marketing.
FORBES: What Marketers Can Learn From The Largest Act Of Civil Disobedience in Canadian History.
We made Josh Knauer promise to help us all stay a step ahead of the zombie uprising.
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