Explainer: From sponsor to enemy: What’s behind Pakistan’s attack on Afghan Taliban?

ISLAMABAD, March 17 – Pakistan has been the Afghan Taliban’s closest friend for decades. It was Islamabad that helped give birth to the Taliban in the early 1990s – as a way to give Pakistan “strategic depth” in its rivalry with India. What’s gone wrong? On Monday night, Pakistan carried out an air strike on Afghan capital Kabul, the latest attack in fighting between the neighbours that ?has flared in recent weeks. Sign up here. The Afghan Taliban said at least 400 people were killed and 250 injured in the strike on a drug rehabilitation hospital, but ?Pakistan rejected the…