The Syrian rebel group Harakat al-Hazm, one of the White House’s most trusted militias fighting President Bashar al-Assad, collapsed Sunday, with activists posting a statement online from frontline commanders saying they are disbanding their units and folding them into brigades aligned with a larger Islamist insurgent alliance distrusted by Washington.

The statement bore Hazm’s stamp and logo, and according to the Syrian Observatory for Human Rights, a pro-opposition monitoring group, the brigade’s fighting units are disbanding. Emails and phone calls to Hazm’s political leaders were not returned.

“Given what is happening on the Syrian front, offenses by the criminal regime with its cronies against Syria as a whole, and Aleppo specifically, and in an effort to stem the bloodshed of the fighters, the Hazm movement announces its dissolution,” the statement said. […]