Five years ago, on January 23 2009, a CIA drone flattened a house in Pakistan’s tribal regions. It was the third day of Barack Obama’s presidency, and this was the new commander-in-chief’s first covert drone strike.

Initial reports said up to ten militants were killed, including foreign fighters and possibly a ‘high-value target’ – a successful first hit for the fledgling administration.

But reports of civilian casualties began to emerge. As later reports revealed, the strike was far from a success.