A Pakistani air strike on a drug rehabilitation centre in Kabul killed at least 408 people on Monday, according to Afghan officials. The Taliban-led government said a further 265 people were injured when the strike hit the Omid Addiction Treatment Hospital in the Afghan capital. Islamabad has rejected the claims of civilian casualties, maintaining that its forces targeted " military installations and terrorist support infrastructure ." A spokesperson for the Pakistani military said the operation was " precisely and carefully undertaken " to avoid collateral damage. Pakistan has not verified the reported casualty figures in the incident that follows a month of the heaviest fighting between the two nations in years. Tensions ignited in February when Pakistan launched air strikes inside Afghanistan against what it described as militant strongholds. Kabul responded by branding the move a violation of its sovereignty and launched retaliatory operations. Over the last...