The arrangement, signed ahead of a NATO summit on Afghanistan in Chicago later this month, stipulates that U.S. intelligence resources, military aircraft and counterterrorism tools will continue to provide support to their Afghan counterparts. But there will be no permanent bases or permanent U.S. military presence in the country, Obama said.
In return, the Afghan government had pledged to work on greater transparency and improved governance, a senior administration official said.
The latest ABC News/Washington Post poll found a record-high number -- 66 percent -- of Americans believe the Afghanistan war has not been worth fighting, matching opposition to the war in Iraq at its peak five years ago.
As for views of Obama's handling of the war effort, more Americans approve than disapprove of his leadership, 48 to 43 percent.