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The inability of Russia and the US to forge a collective response to the Syria crisis at the United Nations is a significant moment in the 16-month-long uprising.
It makes it inevitable that the conflict between the Assad regime and rebels will develop into an even more bloody confrontation over the next few weeks, with a potentially significant impact on the wider region. The crisis now poses a range of security risks which will this weekend be much on the minds of policymakers in western states and in the Middle East. Read more