French intelligence report says forces loyal to Syria's president carried out chemical attack in Damascus.
France's president wants his Syrian counterpart punished for last month's lethal chemical attack in Damascus.
A French intelligence report says forces loyal to Bashar al-Assad were behind a 'massive and co-ordinated' attack on August 21st.
French military doctors are said to have authenticated some 47 amateur video clips purportedly shot on the morning it happened.
Prime Minister Jean-Marc Ayrault says a coalition of countries is needed to back a military response.
(SOUNDBITE)(French) FRENCH PRIME MINISTER JEAN-MARC AYRAULT SAYING:
"There is no question of France acting alone. The President of the Republic is working on persuading and bringing together a coalition as quickly as possible."
Turkey says it too backs military action and is preparing for the possibility of a U.S.-led strike against the Syrian government.
Those preparations include field hospitals to cope with any rush of refugees and chemical detoxification tents.
Syria says the rebels carried out the chemical attack in Damascus and that it will retaliate against any military strike.
As the debate rages on there are signs more people are fleeing Syria and Egypt for safer shores.
The Italian coastguard rescued what officials say were mostly migrants from both countries on Monday.
The majority of migrants arriving along Italy's southern coastline are from North Africa.
The United Nations says those arriving from Syria and Egypt are increasing.