At his grocery store in an Iranian neighborhood of Los Angeles, Mohammad Ghafari is worried sick about his brothers and sisters since the United States bombed the Islamic republic's nuclear sites.But as he stands among his dates, dried plums and pistachios, he also cherishes the hope of change in his native country. Iran "is not capable of providing food to the Persian people," said Ghafari, who left to study abroad before the 1979 revolution and never returned. "If the people (there) were happy about a change of regime, I would be too."