It sounds like the plot line from The Terminator – but in fact it is the subject of a serious debate at the United Nations.
Experts will discuss the pros and cons of using robots during war as it becomes clear that more and more nations are advancing closer to building them.
And a key issue will be whether the assassins could one day potentially turn on the human race.
In one corner will stand Professor Noel Sharkey, the co-founder of the Campaign Against Killer Robots.
His opponent will be Professor Ronald Arkin, an American roboticist.
The two will meet at the UN Convention on Certain Conventional Weapons in Geneva in the first debate of its kind.
If the result finds that robots could legitimately be allowed during warfare, we may one day see a fully autonomous weapon that can engage targets without any human intervention.
Those arguing in favour of the machines agree that certain laws should be in place to limit what they can do.
Their opponents state that the robots could one day turn on their makers.