The real problem the use of WP is that we are using it in ways that we should not. WP is banned by treaty by most of the world, for anything other then illumination, but the US would not sign that one.

Paraphrased from the US military rep that yesterday held a conference:
We continue to use it to flush out people so we can then use heavy explosive to destroy the targets.

He did not say whether the building of the running people on fire were the targets.