Blau cannot return stolen documents: Nobody can. Once information is stolen, it can easily be copied, so returning it is totally meaningless. How can anybody think, in today's world of computers, that returning a secret document can restore the secrecy of the material?
Russia: U.S. plan to provide air cover for Syrian rebels undermines Damascus fight on ISIS (Reuters)
from the article: Anat Kam waives immunity, urges Uri Blau to return to Israel