The Pentagon is indefinitely postponing plans to stop using a certain type of cluster bomb -- a battlefield weapon that has killed or seriously wounded civilians.
The Pentagon planned to stop using the older style bombs in 2019 and replace them with a so-called safer version.
A Defense Department memo said Thursday the military has been unable to produce cluster bombs with a failure rate of 1 percent or less.
Cluster bombs explode in midair and scatter smaller bombs across a wide target area.
Human rights groups say many of these bomblets fail to explode until a child finds one and mistakes it for a toy or a farmer picks one up in his field.
A 2010 treaty outlaws the use of cluster bombs, but the U.S. is not a signatory. It calls the bombs a legitimate weapon needed for such wartime tactics as attacking enemy troop formations.
Human Rights Watch condemned the Pentagon's decision.