Iran steps up arrests while remaining positive on US talks

The arrests -- including that of Javad Emam, the spokesperson for the main reformist coalition -- came after Iranian and US officials held talks in Oman that both sides painted as positive. On Saturday, Iran heaped more jail time on Nobel Peace Prize winner Narges Mohammadi, and on Monday arrested Hossein Karoubi, the son of prominent dissident Mehdi Karoubi. Weeks after repressing a wave of protests, one of the greatest challenges to government authority since it came to power in the 1979 Islamic revolution...