BEIRUT, Lebanon — President Obama’s decision to seek Congressional approval for a military strike in response to reports of a chemical weapons attack in Syria drew a range of reactions from Syrians on Sunday, with rebel leaders expressing disappointment and goverment leaders questioning Mr. Obama’s leadership.

Syria’s government on Sunday mocked Mr. Obama’s decision, saying it was a sign of weakness. A state-run newspaper, Al Thawra, called it “the start of the historic American retreat,” and said Mr. Obama had hesitated because of a “sense of implicit defeat and the disappearance of his allies,” along with fears that an intervention could become “an open war.”

Syria’s deputy foreign minister, Faisal Mekdad, told reporters in Damascus that “it is clear there was a sense of hesitation and disappointment in what was said by President Barack Obama yesterday. And it is also clear there was a sense of confusion, as well.”

Many Syrian opposition leaders expressed disappointment about the move, and called on Congress to approve a military strike. The leaders said any intervention should be accompanied by more arms for the rebels.