Ourselves, actually, designed and developed as both a concept and as individual blueprints/designs, naturally the individual parts may come from a collection of countries, but Israel is a non-factor for US drone development and what parts that do come from there can easily be obtained from another country.:
http://en.wikipedia.org/wiki/Unmanned_aerial_vehicle
Regardless, they certainly do pioneer a lot of impressive technologies both military and non-military.
Hey tears
Sorry but you couldn't be more wrong. A quick google instead of relying on wiki would have made that very clear. The man directly responsible for our drone program is an ISRAELI! -
http://www.impactlab.net/2011/12/26/drones-garage-invention-spawns-multibillion-dollar-defense-industry/But by this time Israel had already been perfecting drones.
"In the late 1970s and 80s, Israel developed the Scout and the Pioneer, which represented a shift tÂoward the lighter, glider-type model of UAV in use today. The Scout was notable for its ability to transmit live video with a 360-degree view of the terrain. The small size of these UAVs made them inexpensive to produce and difficult to shoot down." -
http://science.howstuffworks.com/reaper1.htmThe predator drones we use today are based on Israeli design.