The ultimate size of the force will depend upon the willingness of U.N. members to contribute troops, police and equipment, with most of the force coming from Africa.

NPR: U.N., African Union Unite to End Darfur Violence

State department spokesman Nicholas Burns said the United States is receiving mixed signals from Bosnian Serb leaders on their willingness to comply with U.N. demands.

CNN: Bosnian Serbs unyielding as NATO renews assault

To be sure, those insisting that the Bush administration pursue the U.N. option profess a willingness to provide a blessing, after a fashion.

CENTERFORSECURITYPOLICY: Center For Security Policy