Secretary of State Hillary Clinton was silent as a senior Egyptian official stated during a joint press conference that his country would only uphold its peace treaty with Israel if the Jewish state returns to its 1967 borders and gives Palestinians control over portions of Jerusalem. During a press conference Saturday in Cairo, Clinton and Egyptian Foreign Minister Mohammed Kamel Amr were asked about Egypt’s longstanding peace treaty with Israel, which has come under scrutiny in recent months by officials of Egypt’s new, Muslim Brotherhood-led government. “Egypt’s understanding of peace is that it should be comprehensive, exactly as stipulated in...