Thousands of people attended the funeral of Mostafa Ahmadi Roshan, a nuclear expert who Iran claims was killed by the U.S. and Israel as part of covert operations. Roshan was the director of the Natanz uranium enrichment facility in central Iran, and Supreme Leader Ayatollah Ali Khamenei said those behind Wednesday's assassination would be punished, though he didn't say how the U.S. and Israel killed the scientist. Both the U.S. and Israel have denied the charge.
