Islamabad ? An overwhelming number of Pakistanis believe their leaders should not cooperate with the U.S. fight against terrorism, according to a poll released Thursday, amid a spate of American missile strikes aimed at Islamist militants that have also killed civilians.

Eighty percent of people surveyed said “no” when asked if Pakistan should assist the U.S. in the “war on terror,” according to the poll by the International Republican Institute, a U.S.-based nonprofit organization. That response surged 19 percentage points from 61 percent when Pakistanis were asked the same question in March.