US Gov't says Syrian forces used chemical weapons
The United States Government says Syrian forces under President Bashar al-Assad have used chemical weapons on a small scale against rebel forces.
A senior aide to President Barack Obama said the US estimated 100-150 people had died in multiple attacks.
Ben Rhodes said the US had no reliable evidence the opposition had used chemical weapons.
The White House has previously made clear that the US considers the use of such weapons crossing a red line.
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