That said, America and its allies cannot wait for wait for "endless failed processes that can only lead . . . to regional instability," the Obama administration says.
White House has all but abandoned efforts to secure a United Nations mandate for military action in Syria, due to Russia and China's opposition to strikes against their top ally in the Mideast.
However, administration officials have been busily selling the notion that action in Syria has steadily increasing support from the international community.
Despite the growing number of foreign countries signing onto the White House statement, only one -- France -- has publicly agreed to provide military support for possible American-led action in Syria.
In August, the British Parliament soundly defeated an effort by U.K. Prime Minister David Cameron to authorize British forces to take action in Syria, alongside American forces.
In the U.S., members in both parties have said they want to avoid getting the U.S. involved in another conflict in the Middle East.
President Obama is seeking congressional authority to take military action against Assad's forces, in retaliation for the regime's alleged use of chemical weapons against anti-government rebels in the country.
Use of those weapons, Obama claims, crossed a so-called "red line" that would trigger an armed response from U.S. forces.
Obama has maintained the White House has the authority to carry out strikes against Syria, without the blessing of Congress.
However, the president opted to seek lawmakers' approval, to ensure any action taken has the full support of the American people.
That said, over 70 percent of Americans believe that military action in Syria would not make the United States any safer.
While a CNN/ORC International poll found that 80 percent of people believe Assad did use chemical weapons, a significant majority of those polled believe hitting the regime would not serve U.S. national security interests.
Several polls last week also found most Americans oppose intervention. Gallup found that 51 percent opposed a strike, and 13 percent were undecided. A Washington Post/ABC News poll found 59 percent opposed a strike. And Pew’s survey showed 48 percent disapproved.
The full Senate is scheduled to vote on a measure to authorize action in Syria this week, with House members expected to hold their own vote to authorize military force sometime this month.