John Allen, the retired Marine general in charge of coordinating the U.S.-led coalition’s response to the Islamic State, confirmed Wednesday what Syrian rebel commanders have complained about for months: that the United States is ditching the old Free Syrian Army and building its own local ground force to use primarily in the fight against the Islamist extremists.

“At this point, there is not formal coordination with the FSA,” Allen told reporters at the State Department.

That was perhaps the bluntest answer yet to the question of how existing Syrian rebel forces might fit into the U.S. strategy to fight the Islamic State. Allen said the United States’ intent is to start from scratch in creating a home-grown, moderate counterweight to the Islamic State. […]