In return, Israel should demand full Egyptian investigations of the various gunrunning tunnels excavated from the Egyptian side of the border.
"According to Sharon's office, Mubarak thanked Sharon for the call and replied that Egypt accepts the apology and realizes that the incident was an accident."
...and later, condemned Israel, mobilized its troops, repudiated its peace treaty, attacked Israel's southern border with 150,000 troops, and Israel inflicted 50,000 casualties in 16 hours, then seized the Sinai as the rest of Egypt's army threw down its weapons and surrendered. [sample headline for future use]
Israel should demand an investigation into why these soldiers didn't stop the terrorists.