Good news: the pope can use his Mac to develop the bomb, legally.
I found this on the Export Page of the Apple website.
It’s prohibited to allow certain countries to use Apple products in the design, development, production or use of nuclear, missiles, and chemical and biological weapons and technology without proper authorization from the U.S. Government. This applies to all countries, EXCEPT Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy (includes San Marino and Holy See), Japan, Luxembourg, Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Turkey, and United Kingdom.