There are growing calls for the British Prime Minister David Cameron to consider a second vote on military action in Syria - IF more evidence against President Assad emerges.
Boris Johnson is the latest senior politician to suggest a new bid for parliamentary support could be made.
In America, President Obama's asked Congress for formal approval of US-led military intervention.
Arab League foreign ministers urged the United Nations and international community to take "deterrent" action, while blaming the regime for the alleged chemical weapons assault.
All the while, a defiant President Bashar al-Assad insisted that Syria would confront any military action.
With all eyes on Washington, Obama -- as well as Vice President Joe Biden and the White House chief of staff -- made individual calls to members of Congress yesterday.
Republican senator Mike Burgess is not convinced.
Meanwhile, Russia says its totally unconvinced by the evidence presented by the United States and its allies of an alleged chemical attack outside Damascus.
Foreign Minister Sergei Lavrov said this morning there are "many doubts" about images of the alleged attack posted on the Internet.
