Unmanned aircraft are moving us towards a 'Terminator-like' world, says Ministry of Defence

Fearing that this could become a reality, the internal report says we must act now to decide what is 'acceptable machine behaviour'.

There is increasing unrest about the use of unmanned drones in Afghanistan - and the Ministry of Defence suggests there could be both legal and moral issues with using pilotless planes.

The drones have killed 124 people in the war-torn country since July 2008, David Cameron revealed in December.

Pakistan has recently called for the U.S. to stop using the unmanned aircraft. Every time a blunder is made Afghan insurgents are able to brand the West 'cowardly' for using them.

As unmanned aircraft become more sophisticated, the report calls for ethical questions to be addressed. (read more)