When President Obama addresses the nation Tuesday night about Syria, a new McClatchy-Marist poll finds “he will confront the most unfriendly political landscape of his presidency, one where opposition knows no boundaries and Democrats, Republicans, whites, blacks, Hispanics, old, young, men and women all are deeply skeptical of the mission.”

“A solid majority of voters opposes airstrikes and wants Congress to reject Obama’s request for approval… A majority thinks he does not have a clear idea of what he’s doing with Syria. The ranks of Americans who approve of the way he’s handling foreign policy has dropped to the lowest level since he assumed office. And an overwhelming majority insists he stand down should Congress vote no.”

Two interesting views:

Ross Douthat: “It is to President Obama’s great discredit that he has staked this credibility on a vote whose outcome he failed to game out in advance. But if he loses that vote, the national interest as well as his political interests will take a tangible hit: for the next three years, American foreign policy will be in the hands of a president whose promises will ring consistently hollow, and whose ability to make good on his strategic commitments will be very much in doubt.”

Kevin Drum: “Presidents suffer defeats all the time. Obama lost on cap-and-trade. He’s lost on plenty of judicial and executive branch nominations. He couldn’t get agreement for a grand bargain. He lost on gun control. What’s more, Republicans have been opposing him on virtually everything from the day he took office. In what concrete way would a defeat on Syria change this dynamic in even the slightest way?”

Pew Research: “Over just the past week, the share of Americans who oppose U.S. airstrikes in Syria has surged 15 points, from 48% to 63%, as many who were undecided about the issue have turned against military action. By contrast, the share of Americans who support airstrikes remains virtually unchanged: Just 28% favor U.S. military airstrikes against Syria in response to reports that its government used chemical weapons.”

The Week: The four biggest challenges Obama faces in his address to the nation on Syria.

A new CNN/ORC International poll released shows that “even though eight in 10 Americans believe that the Bashar al-Assad regime gassed its own people, a strong majority doesn’t want Congress to pass a resolution authorizing a military strike against the regime.”

“More than seven in 10 say such a strike would not achieve significant goals for the U.S. and a similar amount say it’s not in the national interest for the U.S. to get involved in Syria’s bloody two-year long civil war.”

Wonk Wire: America embraces isolationism.

Hillary Clinton will make her first public remarks about Syria on Monday when she makes a visit to the White House for an unrelated event, a Clinton aide told Politico.

“The comments, the first since an unidentified aide said last week that the former Secretary of State supports President Obama in going before Congress to get support for a limited strike against Syria, will come after she meets privately with Obama at the White House, the aide said.”