More than seven in 10 people believe the war in Iraq was not worth the cost, according to new polling that rivals disapproval of the U.S. war in Vietnam. 

According to a NBC News/Wall Street Journal/Annenberg poll, 71 percent of people now believe the war was not worth it, more than a decade after the first troops moved in 2003. Another 22 percent said the opposite. 

The poll surveyed 1,383 voters and has a margin of error of plus or minus 3 percent. 

The numbers rival disapproval of the Vietnam War. Gallup polling from the early 2000s found that 69 percent of people said sending troops to Vietnam was a mistake. 

Disapproval of the war has spiked 12 points in the last year, as ongoing turmoil in Iraq threatens the country. President Obama's disapproval rating on his handling of Iraq has peaked amid the conflict. 

A similar CBS News/New York Times poll released earlier this week found 75 percent said the war was not worth it. While the war has never been popular, disapproval of the war has reached a new high as Sunni extremists have taken over some regions of the country. The United States removed its troops in 2011. 

At the time the war started in 2003, 46 percent of people believed it was worth it compared to 45 percent who said it was not worth the cost.