Is there any shred of evidence that this was an internal Iranian matter? Evidence matters, but as my History teacher once said: "The guilty is often, but not always, the one who profits most from the crime". And to suggest that the struggle between the President and the Ayatolla led to the assassination of an Iranian scientist does show some lack of knowledge about current Iranian affairs.
Defense Ministry says had no knowledge of alleged improper defense deals by Gal Hirsch (Haaretz)
from the article: What if the Iranians start killing scientists?