Pakistan ? The Taliban left so many mutilated bodies at the crossing — some hanging from trees with threatening notes — that Pakistanis in the Swat Valley’s main town took to calling it “bloody intersection.”

On Sunday, the army said that spot and seven other major crossings in Mingora were secured, part of street-by-street urban fighting whose success is considered critical to flushing out the militants from the valley as a whole.

The advances in Swat came as helicopter gunships pounded alleged militant hide-outs in a nearby tribal region, killing at least 18 people, while police announced the arrest of a militant commander and six other Taliban fighters elsewhere in the northwest.

The events underscored how widespread and entrenched militant activity is along Pakistan’s rugged region bordering Afghanistan, and how pushing the Taliban out of Swat is unlikely to defuse the overall insurgency beleaguering the nuclear-armed Muslim nation.