Another Afghan police officer opened fire on American troops on Thursday, injuring two of them in the latest indication that Washington’s claim that the training mission is going well is a lie.

Also on Friday, it was revealed that an elite Afghan soldier shot dead an American trainer and his translator at a U.S. base on Wednesday. This is the first such rogue attack reported to have been carried out by the “closely vetted” special forces of Afghanistan.

Deadly shootings between Afghan soldiers and their American counterparts has increased markedly in occurrence, especially over the last year. Which is why the Wall Street Journal’s report almost a year ago on a leaked NATO document on the training mission in Afghanistan is so revealing. It said “the killings of American soldiers by Afghan troops are turning into a ‘rapidly growing systemic threat’ that could undermine the entire war effort.” And that was a year ago.