Of the more than 100 foreign-policy experts (both liberals and conservatives) surveyed for the  Terrorism Index, 53 percent now say that the surge is having a negative impact—an increase of 22 percentage points in just the past six months. Nearly all of the experts (92 percent) believe that the war in Iraq is having a negative impact on U.S. national security.

A bipartisan majority (68 percent) now say that the United States should redeploy troops from Iraq in the next 18 months, though most oppose an immediate withdrawal. Surprisingly, more conservatives (25 percent) called for an immediate pullout than liberals or moderates.

Overall, nearly all of the experts (91 percent) say that the world is becoming more dangerous for Americans and report that the country is not winning the war on terror (84 percent).

For complete survey results, methodology, list of participants, and experts available for comment, visit ForeignPolicy.com and AmericanProgress.org.