KABUL — The acting governor of Afghanistan’s northern Kunduz province said Sunday that Taliban fighters had been routinely firing “small and heavy” weapons from the grounds of a local hospital before it was apparently hit by a U.S. airstrike over the weekend. In an interview, Hamdullah Danishi said the Doctors Without Borders compound was “a Taliban base” that was being used to plot and carry out attacks across the provincial capital, Kunduz city. “The hospital campus was 100 percent used by the Taliban,” Danishi said. “The hospital has a vast garden, and the Taliban were there. We tolerated their firing...