Syria will defend itself with "all available means" against US action

The Syrian government has announced that it will defend itself with "all available means" in the case of a US military strike.

We've already heard comments from prime minister David Cameron demanding that the international community respond, following aggressive comments from US secretary of state John Kerry.

Kerry said that the situation in Syria "is inexcusable and -- despite the excuses and equivocations that some have manufactured -- it is undeniable."

The prospect of war has seen investors flee from nearby stock markets.