LEAD:
The first UN-mediated negations on Syria in almost a year are taking place in Geneva on Thursday. Russia, which supports President Bashar al-Assad's military advancements, had asked the Syrian government to 'silence their own skies in the areas touched by the ceasefire' during the talks. Julia Lyubova reports from Moscow.
IN: However, UN mediator Staffan de Mistura..
OUT: SOC
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