TEHRAN Iran 's supreme leader Ayatollah Ali Khamenei on July 5 made his first public appearance since the outbreak of his country's recent 12-day war with Israel, taking part in a religious ceremony in Tehran. The octogenarian leader was shown in a video broadcast by state television greeting people and being cheered at a mosque as worshippers marked the anniversary of the martyrdom of Imam Hussein, an important date for Shia Muslims. Khamenei, 86, can be seen on stage dressed in black as the