The airstrikes came hours after Afghan troops had attacked Pakistani border positions and follow months of worsening ...

Pakistan bombed Taliban government targets in Afghanistan's major cities, a sharp escalation in clashes that the Pakistani defence minister described as "open war".

The renewed violence between the neighboring countries stems from Pakistan’s accusations that Afghanistan’s Taliban government has harbored a militant group.

Pakistan struck several sites in Afghanistan early Friday in what it calls an "open war." We look at what's driving the renewed fighting.