DAMASCUS, Syria — Momentum appeared to build Tuesday for Western military action against Syria, with the U.S. and France saying they are in position for a strike, while the government in Damascus vowed to use all possible measures to repel it.
The prospect of a dramatic U.S.-led intervention into Syria's civil war stemmed from the West's assertion — still not endorsed by U.N. inspectors — that President Bashar Assad's government was responsible for an alleged chemical attack on civilians outside Damascus on Aug. 21 that the group Doctors Without Borders says killed 355 people. Assad denies the claim.
The Arab League also threw its weight behind calls for punitive action, blaming the Syrian government for the attack and calling for those responsible to be brought to justice.
British Prime Minister David Cameron recalled Parliament to hold an emergency vote Thursday on his country's response. It is unlikely that any international military action would begin before then.
U.S. Defense Secretary Chuck Hagel said U.S. military forces stand ready to strike Syria at once if President Barack Obama gives the order, and French President Francois Hollande said France was "ready to punish those who took the heinous decision to gas innocents."
Obama is weighing a response focused narrowly on punishing Assad for violating international agreements that ban the use of chemical weapons. Officials said the goal was not to drive Assad from power or impact the broader trajectory of Syria's bloody civil war, now in its third year.
Russian Foreign Minister Sergey Lavrov said Monday the West should be under no illusion that bombing Syrian military targets would help end the violence in Syria, an ally of Moscow, and he pointed to the volatile situations in Iraq and Libya that he said resulted from foreign military intervention.
Syrian Foreign Minister Walid al-Moallem said his country would use "all means available" to defend itself.