KABUL, Afghanistan (AP) — Afghanistan accused Pakistan on Thursday of placing unacceptable conditions on efforts to bring peace to the country after nearly 12 years of war, the latest in a series of barbed exchanges that has sunk relations between the two neighbors to a new low.

A breakdown in ties threatens to hinder — or even paralyze — attempts to lure the Taliban to the negotiating table. That’s a key goal of the United States and its allies as they work for a peaceful solution in Afghanistan ahead of the final pullout of foreign combat forces in 20 months.