The requirement of Lebanon to disarm Hezbo terrorist organization which is the reason for Israeli overflights. What part of: No Hezbo, no overflights dont you understand? Example, Israel does not fly over Jordan because it does not harbor and Iranian devision like Hezbo that constantly attacks Israeli citizens.
First refugees travelling on Hungarian bus arrive at Austrian border (Reuters)
from the article: Lebanese report Israeli phone threats following Katyusha fire