In a bloody hour or two, the 47th-33rd Brigade battlegroup lost nearly a fifth of Ukraine’s M-2s, a fifth of its Leopard 2A6s and half its Leopard 2Rs. The United States promptly pledged more than enough extra M-2s to make good the June 8 losses, but Ukraine’s European allies have yet to pony up more Leopard 2A6s. And there literally aren’t any more Leopard 2Rs.