Poster of Syrian President Bashar al-Assad and Russian President Vladimir Putin
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What is Russia's role in Syria?

As Russia strengthens its military relationship with Syria, the BBC's Paul Adams looks at what is known about the ties between the two countries.

Russia has always been Syria's main military backer, but in recent weeks there are signs of increased support for Syrian President Bashar al-Assad's regime.

  • 17 Sep 2015
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