Professor Fawaz Gerges, head of the Middle East Centre at the London School of Economics, said Syrian President Bashar al-Assad looked "confident" and "defiant" in his speech in Damascus today.
Professor Gerges added that the speech showed that Assad was not on the "verge of imminent collapse."
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The decision represents something of a victory for the president who will now be able to enforce most of his controversial 90-day ban.
Cool in the north, warmer air to the south
Police have warned the drug, known locally as "pink champagne", could be deadly.