US denies backing failed raid to remove Venezuela's Nicolás Maduro – but it has a long history of sponsoring private armies elsewhere.
Guns for hire are back in business – and they're making war even more dangerous.
Protecting rhinos and fighting terrorism are both noble causes, but there isn't much evidence of a link between the two.
IS has proved very adept at fending off massive conventional forces – but that doesn't mean crack private security teams would do any better.
Comparisons of foreign volunteers in Syria to the International Brigades of Spain are apt, but not for the reasons you think.
Mercenaries and private armies have always been controversial – but are they really any worse than regular armies?
South Africans have a reputation for being among the best mercenaries in the world. It's no wonder Nigeria is turning to them.