US letter to UN says Syria regime used sarin twice in Aleppo
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The U.S. says the Syrian government used the nerve agent sarin on two occasions in Aleppo in March and April.
U.S. Ambassador Susan Rice detailed the attacks in a letter to U.N. Secretary-General Ban Ki-moon obtained Friday by The Associated Press.
It said sarin was used in a March 19 attack on the Aleppo suburb of Khan al-Assal and in an April 13 attack on the Aleppo neighborhood of Shaykh Maqsud.
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It also said unspecified chemicals, possibly including chemical warfare agents, were used May 14 in an attack on Qasr Abu Samrah and in a May 23 attack on Adra.
The letter said an updated U.S. intelligence assessment concluded "that the Syrian government has used chemical weapons on a small scale against the opposition multiple times in the past year."