Following a bombing at a drug treatment center in Kabul, Samira Muhammadi is calling for international investigations. The attack killed her son and hundreds of other Afghans in a devastating incident.

Samira Muhammadi hopes an international investigation can “extinguish” her pain after a Pakistani bombing killed her son and hundreds of other Afghans in the capital Kabul last month. The March 16 attack hit a drug treatment centre and killed 411 people, according to Afghan officials. A United Nations source, speaking on condition of anonymity, said they had verified at least 250 killed, with more still missing. “There should be investigations on this … Like me, many mothers lost their sons,...