Claiming "unacceptable" of "any use of chemical weapons" in Syria, the spokesman urged the international community to respond to that.

　　British Prime Minister David Cameron will continue talks with international leaders to agree a "proportionate response" that will "deter" Bashar Assad's regime from using toxic agents on the Syrian population, Downing Street said.

　　Number 10 indicated that a decision could be taken before the results of a report by UN weapons inspectors into the attack, Sky News reported.

　　Foreign Secretary William Hague has already said the West could act on Syria even without full UN Security Council backing.

　　Cameron said he has recalled lawmakers from their summer break to debate the response to an alleged chemical weapons attack in Syria

　　The parliament would vote on Thursday on a government motion on how to respond to last Wednesday's suspected gas attack near Damascus, Cameron was quoted as saying.

　　In a phone call with Russian President Putin on Monday, Cameron said "there was little doubt that this was an attack carried out by the Syrian regime." But Putin said that they did not have evidence of whether a chemical weapons attack had taken place or who was responsible.