Washington, D.C. ? Nearly half of U.S. diplomats unwilling to volunteer to work in Iraq say one reason for their refusal is they don’t agree with Bush administration’s policies in the country, according to a survey released Tuesday.

Security concerns and separation from family ranked as the top reasons for not wanting to serve in Iraq. But 48 percent cited “disagreement” with administration policy as a factor in their opposition, said the survey conducted by the American Foreign Service Association, the union that represents U.S. diplomats.

In addition, nearly 70 percent of U.S. diplomats who responded to the survey oppose forced assignments to Iraq, a prospect that sparked a storm of controversy last year when the State Department announced it might have to require such tours under penalty of dismissal in the largest diplomatic call-up to a war zone since Vietnam.