Why are Afghanistan and Pakistan fighting?

The two sides have different versions of how and why the deadly dispute began.

Pakistan carried out strikes in Kabul and Kandahar, the base of Taliban leader Haibatullah Akhundzada, as well as in the eastern border region of Paktia, according to officials in both nations.

Pakistan and Afghanistan have exchanged cross-border attacks overnight in a dramatic escalation of tensions that led Pakistan’s defense minister to say on Friday that the two countries are in a state of “open war.”