As difficult as it must be, what we need most after the atrocious Paris attacks are cool heads.
It is too early to say what happened exactly, one report claimed an attacker shouted 'this is for Syria' before he opened fire and French investigators have identified a Syrian who apparently passed through Greece as a refugee last month as one of the perpetrators.
Islamic State have claimed responsibility and the French president, François Hollande, has called their actions an 'act of war that must be countered mercilessly'.
Amidst an influx of hundreds of thousands of migrants, the revelation that one of the Paris killers may have made his way to Paris with refugees is going to prove deeply toxic.
Muslims, particularly in France, will now increasingly fear being associated with fanaticism and terror and far-right groups may will try to fuel more hatred which will lead to attacks on innocent Muslims.
The political leaders need to take a deep breath before responding, what we don't need is an upping of the present carnage and more troops and heavier weapons dispatched to another Middle Eastern country and another decade of war to satisfy the understandable cry for revenge, we have the American reaction to 9/11 to see exactly how that ends up and last night in Paris is undeniably just the latest blow-back of their actions over a decade ago.
If Britain's Prime Minister, David Cameron, doesn't try to use this as an excuse to push for attacks in Syria i will be surprised as he has been itching to get involved in the action ever since it flared up but Governments need to avoid knee-jerk, emotive reactions and be smart in the way they react and not add fuel to an already out of control fire.