There was a defector who flew a Mig-25 from Siberia to Japan, I think in the mid 1970’s. The USAF took it apart all the way down to the last lockwasher. The soviets raised all kinds of hell. They wanted their plane back. Eventually the AF sent it back with each individual part packaged. Thousands of individual packages. They got their plane back.
Name was Belenko. Read his story. Bad marriage. Step father was mean to him. Too many lies told over there. The screw heads were not flat behind the wings as it didn’t effect the speed. It demonstrated how unadvanced they were.
Belenko died recently.
As far as I know, Obama never asked for it back even though most of the country expected him to.
Hah! Here is your jet back. Have fun putting it back together.