"No effort was made to get the prisoners released", due to the squabbling of the leadership over who was responsible. Truth is during most of those years(1955-1968) what leverage did Israel have over Egypt? None in my opinion, EXCEPT in 1956/7 after the Sinai Campaign when we held some 6,000 Egyptian prisoners. Says something about Ben-Gurion and his colleagues. Thank you Meir Amit-only your insistence after the Six Day War got them out.
4.2-scale earthquake felt in Dead Sea, Jerusalem area (Haaretz)
from the article: MI figures out what went wrong in Lavon affair - 55 years later