There are many exciting developments in the world of robotics and here is one from the European Union, funded under the EU’s  7th Framework Programme.  The video below shows how a drone can take over command and control responsibilities of a swarm on the ground, without any external communication channels like GPS (i.e., Spatially Targeted Communication and Self-Assembly).  Some of the example applications shown here are cool, i.e, moving chairs, bringing snacks to a guy watching TV, pushing the water container, etc.  But this one has far more devastating implications when deployed for the military in remote battlefields.