Color me uneducated. I thought the Iron Dome system was an American system to begin with.
a mobile all-weather air defense system developed by Rafael Advanced Defense Systems and Israel Aerospace Industries.
Much of our missile defense research was done through Israel, before Bush 43 ended our participation in the ABM Treaty (which allowed us to do R&D more openly). There is probably some shared technology, but Iron Dome is primarily an Israeli system.
No ... we were involved, but it’s really an Israeli developed system.
You are correct. My wife was actually the Arrow Field Office manager for the US Army in Tel Aviv in 2005-6. Germany and Japan are the other two allies who submit their test data to the USA so we can compile every aspect of those weapon systems.