sentences:  Egypt has mediated several unofficial ceasefire understandings between Israel and Palestinians.Relations between Israel and Iran have alternated from close political alliances between the two states during the era of the Pahlavi dynasty to hostility following the rise to power of Ayatollah Ruhollah Khomeini.While Iran was the second Muslim-majority country to recognize Israel, the two states do not currently have diplomatic relations with each other, due to Iran's withdrawal of its recognition of Israel.