Syria: US secretary of state John Kerry to address alleged chemical attack - live

"Kerry: chemical attack undeniable, 'there must be accountability' Kerry's remarks are unambiguous as to what the US believes has occurred and he says the "cowardly crime" cannot be allowed to let pass. "The use of chemical weapons is a moral obsecenity," he says. Kerry says evidence of chemical weapons use "is undeniable." After extensive remarks which we'll excerpt in a moment, Kerry said the US would act. "The president will be making an informed decision about how to respond to this indiscriminate use of chemical weapons," Kerry says. "There must be accountability.""