Islamic State terrorists have been guilty of atrocities truly worthy of the history books. They need not be detailed here, other than to note their viciousness has been broad as well as deep.

IS torturers and murderers often focus on certain groups, however. Christians are among them. So are ethnic groups such as the Kurds and Yazidis of northern Iraq. Clearly, IS leaders have a genocidal policy toward some people.

But as The Associated Press has reported, President Barack Obama’s administration has been reluctant to bring those guilty of crimes against humanity to justice. That was confirmed to the AP by those investigating IS’ atrocities and even by some in the administration’s State Department.

The administration’s excuse for not doing its job is feeble. Prosecuting IS members for war crimes could detract from the military campaign against the group, the White House has contended.

Nonsense.

How does it hamper a military campaign to bring someone guilty of, for example, beheading children to justice?

Refusal to recognize the evil of Muslim terrorists by prosecuting and punishing those captured is one more failure that should be rectified speedily by the next president.