UN Secretary General Ban Ki-Moon
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Syria conflict: Ban Ki-moon says 'enough is enough'

Syria's government and main political opposition have traded bitter accusations on the first day of a major peace conference in Switzerland.

At a fractious evening news conference UN Secretary General Ban Ki-moon spoke of the suffering in Syria, saying: "Enough is enough. The time has come to negotiate."

The conflict has left more than 100,000 dead and millions displaced.

Go to next video: Bitter exchanges at Syria talks