Gaza Air strikes were were the actions with "revenge" attribute. Can tou reasonably expect Israel to simply allow persons who are unmistakably terrorists (and successful ones) to escape, and return for another attack. The Egyptian border soldiers understood this and didn't fie on the Isaelis. News accounts don't describe exactly .how they were killed. More useful than an apology would be cooperation and joint investigation with an eye to avoiding a recurrence.
First refugees travelling on Hungarian bus arrive at Austrian border (Reuters)
from the article: Israel and Egypt to hold joint probe into deaths of Egyptian policemen