Syrian envoy says chemical weapons can't be tolerated, demands probe of alleged Aleppo attack

Syria's U.N. ambassador says the use of chemical weapons is not only "a red line" but "a blood line" that cannot be tolerated and is again demanding a U.N. investigation of an alleged chemical weapons attack in Aleppo that it blames on rebels.

Bashar Ja'afari told a news conference Tuesday that his government has bodies and other proof that chemical weapons were used in Khan al-Assad in Aleppo on March 19 and it wants this incident investigated first. The rebels blame the government for the attack.

Ja'afari said his government is demanding details of another alleged chemical weapons attack that Britain and France allege was carried out in Homs in December before it will even consider allowing U.N. experts to conduct an investigation in that city.