Negative views of the war for the first time are at the level of those recorded for the war in Iraq, whose unpopularity dragged George W. Bush to historic lows in approval across his second term. On average from 2005 through 2009, 60 percent called that war not worth fighting, the same number who say so about Afghanistan now. (It peaked at 66 percent in April 2007.)

As support for the Iraq war went down, approval of Bush’s job performance fell in virtual lockstep, a strongly cautionary note for President Obama.