American-trained Syrian fighters gave at least a quarter of their U.S.-provided equipment to al-Qaeda's affiliate in Syria early this week, the U.S. Central Command said late Friday. The acknowledgment is the latest discouraging report regarding the $500 million train-and-equip program, which Gen. Lloyd J. Austin III, head of Central Command, said last week had only four or five" trained Syrian fighters active in Syria. Since then, the military has said approximately 70 fighters have been added. In the toxic and chaotic Syrian mix, Jabhat al-Nusra and many Syrian rebels are fighting a separate war from the one being waged by the United States against the Islamic State. Their main goal is the overthrow of President Bashar al-Assad. U.S. military vetters have had a hard time finding approved Syrians to train who are also willing to pledge to direct their focus toward the Islamic State rather than Assad. The Pentagon's admission of the arms turnover comes at an especially sensitive time for the White House. In light of the shortcomings of the train-and-equip program ... White House and Pentagon officials have been considering providing arms and ammunition to a wider array of rebel groups and relaxing some vetting standards. The recent disclosures, however, highlight the pitfalls of that strategy in Syria, where the United States has essentially no troops on the ground and little means of accounting for the weapons it provides.