DAMASCUS, Syria - Syria on Sunday derided President Barack Obama's decision to hold off on punitive military strikes, but also took precautions by reportedly moving some troops and military equipment to civilian areas.
The Obama administration countered that its case for military action against the regime of Syrian President Bashar Assad is getting stronger, saying it now has evidence that the toxic gas allegedly used in strikes on rebel-held areas was the nerve agent sarin.
The administration predicted Sunday it will obtain congressional backing for limited strikes. After days of edging closer to military action against Syria, Obama suddenly announced Saturday he would first seek approval from Congress, which gets back from summer break Sept. 9.
Assad, in turn, tried to project confidence in his escalating showdown with the U.S., saying in comments carried by state media Sunday that Syria is "capable of confronting any external aggression."
Others exhorted the U.S. either to get involved or stay out of the brutal two-and-a-half-year-old conflict that has claimed more than 100,000 lives and displaced millions.
At the Vatican, Pope Francis said he would stage a worldwide prayer vigil for Syria on Sept. 7 and called on all sides to lay down their arms.
"My heart is deeply wounded by what is happening in Syria and anguished by the dramatic developments" on the horizon, Francis told crowds in St. Peter's Square, forgoing the usual religious theme of his weekly address.
The main Syrian political opposition, which operates largely from exile, warned that Obama would give dictators in Iran, North Korea and elsewhere a free pass to commit atrocities if he does not punish Assad.