Just look at the design. Look at all of the Israeli drones they are completely different. And I'm sure it uses all American electronics as well. Having said that American drones are extremely effective, every bit as much as Israeli drones. The 2 are in the same league. All technology isn't perfect. That this is the first time such an indecent has happened in all the time the USA has been in Afghanistan is a testament to how good those drones are.
High school teacher's union threatens strike (Haaretz)
from the article: Iran says it will not return captured U.S. drone