Hamas was not involved in this opperation. Even the IDF did not blame them, but a fringe group with a Fatah background and proptly murdered their leader. them without any evidence. Egypt is right to take action against Israel for killing its border police; not only was it more unjust killinds but showed total lack of professionalism by the IDF which should lead to a trial of the soldiers involved.
US rally shows support for ex-Marine held by Iran on spying charges (AP)
from the article: Egypt withdraws ambassador to Israel over policemen deaths