As Ukraine develops unmanned fighting vehicles and Russia says it has deployed its remote-controlled tank on the battlefield in Syria, we look at some of the world's front-line robots.
An Israeli soldier with the armor-plated Guardium. The vehicle can be fitted with an array of sensors and deliver hundreds of kilograms of cargo to troops under fire. Although the
Guardium remains in service, the company behind the project wound down its development in 2016 citing a lack of international interest.
But the most famous of the world’s unmanned "hunter-killers" is probably the Reaper drone, introduced to the U.S. Air Force in 2007. A missile launched from a Reaper in 2015 reportedly "evaporated" a suspected Islamic State militant and British citizen, dubbed "Jihadi John," who allegedly beheaded hostages on camera.
The Reaper can fly loaded with missiles for up to 14 hours, and flies too high and quietly to be easily detected from the ground.
Amos Chapple is a New Zealand-born photographer and picture researcher with a particular interest in the former U.S.S.R.