BBC News with Jerry Smit

The medical charity Medecins Sans Frontieres says that it’s quite clear from the evidence Syrian doctors have seen that people were exposed to a neurotoxin in a Damascus suburb last Wednesday. Christopher Stokes, the charity's director in Brussels told the BBC the medical staff treating the victims had also succumbed to the effects, one doctor had died. MSF said 350 patients had died, one in ten of those treated. Mr. Stokes also said MSF can't say who was responsible for the attack.

“Independent inspectors would have to go into establishing both the agent was used and also who would be responsible. Something for which MSF is not confident to determine but it’s quite clear that a major event did take place using neurotoxic agents from all the evidence that we’ve been able to collect so far.”

Syrian state television has made new allegations saying that government soldiers have found chemical agents in tunnels used by the rebels to the east of Damascus. Syrian TV showed images of gas masks and plastic containers with the words made in Saudi Arabia stamped on them.

Tens of thousands of people in Washington have been commemorating the 50th anniversary of Martin Luther King's ‘I have a dream’ speech, a key moment in America's civil rights campaign. Doctor King’s son, Martin Luther King III told the rally that his dream of equality has still not come true. He highlighted the case of an unarmed black teenager who was shot to dead by a neighborhood watch volunteer as he walked home last year.