Bashar Ja’afari, Syria’s U.N. ambassador, speaks during a news conference at United Nations headquarters April 30. Ja’afari says the use
Bashar Ja'afari, Syria's U.N. ambassador, speaks during a news conference at United Nations headquarters April 30. Ja'afari says the use of chemical weapons is not only "a red line" but "a blood line." (Mary Altaffer/AP)