Back in 1989, when the Communist regimes of Europe were tottering towards their end, almost every day somebody would say "There's going to be a civil war." Our job, as foreign journalists who supposedly had their finger on the pulse of events, was to say: "No, there won't be." So
Gwynne Dyer: Civil war more likely in Syria
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When the American invaders destroyed Saddam Hussein's regime in Iraq in 2003, however, what ensued was not peace, prosperity and democracy. It was a brutal civil war that ended with Baghdad almost entirely cleansed of its Sunni Muslim population and the whole country cleansed of its Christian minority.
So if the Baathist regime in Syria is driven from power, why should we believe that what follows will be any better than it was in Iraq? The country's ethnic and sectarian divisions are just as deep and complex as Iraq's, and although non-violent protest continues to be the main weapon of the pro-democracy movement, there is now also violent resistance to the regime's attacks on the population.
This is not to swallow the Baath regime's claim that the army is protecting innocent Syrians from terrorist "armed gangs." The overwhelming majority of the estimated 2900 civilians killed in the past six months were unarmed protesters killed by soldiers and secret policemen. But some Syrians - especially ex-soldiers who deserted from their units to avoid having to murder civilians - are starting to fight back with weapons.
Time is running out in Syria.The revolutionaries struggle to keep their movement inclusive and non-violent, but people are retreating into narrow ethnic and religious identities and resistance is turning violent. The most vulnerable minorities, like the Christians, are starting to think about flight.
If it goes wrong in Syria, it could be almost as bad as the civil war that raged in next-door in Lebanon for 15 years: massacres, refugees, devastation. What can be done to avert that outcome? Perhaps nothing short of foreign intervention on behalf of the revolutionaries can stop it now, for otherwise the regime will fight on until the country is destroyed.
Nato certainly won't take this one on: Syria has four times Libya's population and quite serious armed forces. Non-military intervention in the form of trade embargoes and the like is unlikely to work in time, even if the rest of the world could agree on it.
There is already foreign intervention in Syria, of course, but on the wrong side.
The Shia regimes in Iran and Iraq are already giving material support to the Baathist regime in Syria on the grounds that it is a) Shia and b) steadfast in its resistance to Israeli expansion.
There is no point in hoping for timely concessions from President Bashar al-Assad, son of the late, great dictator: He is effectively the prisoner of the Alawite elite.
The Syrian revolutionaries are on their own. They will probably bring down the Baathists in the end, but by then the regime's increasingly violent efforts to suppress the revolt may well have triggered the civil war that everybody fears.
Gwynne Dyer is a London-based independent journalist whose articles are published in 45 countries.