Among the letters of congratulation that have poured into Cairo following the swearing in of President Mohamed Mursi was one from President Shimon Peres, who emphasized the importance of maintaining the peace agreement that was signed between Egypt and Israel.Peres wrote: "As someone who took part in the process that led to the peace agreement that was signed between my country and yours, I know that both Egypt and Israel attribute supreme importance to regional peace and stability, which serve the interests of all peoples in the region."All of us in Israel greatly respect Egypt and the Egyptian people, who have served as pioneers and have outlined the way of peace and reconciliation in the region, and we know that the work is not yet finished."Peres congratulated Mursi not only on his victory but also on Egypt's democratic elections, and expressed the hope that under Mursi's leadership and courage to face the complex challenges confronting the Egyptian nation, Egypt would continue to cooperate with Israel for the welfare of the people in both countries. "Peace has saved the lives of countless young people in Egypt and in Israel," wrote Peres. "The obligation toward the younger generation remains forever valid. As opposed to war, peace is a victory for both sides."Peres has been notified that his message was safely delivered to Mursi's office.Mursi has already stated in his addresses to his people that all international agreements must be kept.He has made it clear that he wants to review the agreement between Egypt and Israel, but he has not at any stage during his presidential campaign made any declaration that would suggest that he would revoke the agreement.