A string of international arrests of South African citizens, followed by sensational reports in the last week of terrorist plots against tourism and financial sites, is raising new questions about the depth of Islamic extremism in a country known for its racial and religious tolerance.South Africans were jolted all last week by banner headlines about terrorism, most stemming from the arrests on July 25 of two Pretoria-area men during a raid on a suspected hide-out for Al Qaeda in Gujrat, Pakistan. Full Story