The poll shows twice as many people -- 57 percent -- disapprove of how he's handled the situation.
One month ago, 44 percent disapproved of his handling of the situation and 25 percent approved.
The poll echoes a series of polls this week that have shown opposition to military action in Syria about twice as high as support.
The NBC/WSJ poll largely confirms those findings, with 58 percent saying they would like their representative in Congress to oppose military action and 33 percent saying they want their member to support it.
There is a little hope for Obama when it comes to convincing the American public, though. When asked about narrow and specific military action -- "limited to air strikes using cruise missiles launched from U.S. naval ships that were meant to destroy military units and infrastructure used to carry out chemical attacks" -- Americans are more split, with 44 percent in favor and 51 percent opposed.
Obama's overall approval rating stands at 45 percent, with 50 percent disapproving.
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